diff --git a/.github/ISSUE_TEMPLATE/bug_report.md b/.github/ISSUE_TEMPLATE/bug_report.md
index 7c1a33a..7c45275 100644
--- a/.github/ISSUE_TEMPLATE/bug_report.md
+++ b/.github/ISSUE_TEMPLATE/bug_report.md
@@ -7,7 +7,7 @@ assignees: ''
 
 ---
 
-### Summary
+## Summary
 
 Provide a brief summary of the issue you're encountering.
 
@@ -19,15 +19,15 @@ Describe the steps you took when you encountered the bug:
 2. ...
 3. ...
 
-### Expected Behavior
+## Expected Behavior
 
 What did you expect to happen when you followed the steps above?
 
-### Actual Behavior
+## Actual Behavior
 
 Describe what actually happened. Include details like error messages or unexpected outcomes.
 
-### Technical Details
+## Technical Details
 
 Any relevant technical information. Include as much information as possible, including:
 
@@ -35,10 +35,10 @@ Any relevant technical information. Include as much information as possible, inc
 - **Browser/Application Version**:
 - **Additional relevant software versions**:
 
-### Proposed Solutions (Optional)
+## Proposed Solutions (Optional)
 
 If you have any suggestions on how to fix this issue, please share them here.
 
-### Screenshots
+## Screenshots
 
 Attach any screenshots that help illustrate the issue.
diff --git a/.github/ISSUE_TEMPLATE/feature_request.md b/.github/ISSUE_TEMPLATE/feature_request.md
index 5df86d2..5b86f27 100644
--- a/.github/ISSUE_TEMPLATE/feature_request.md
+++ b/.github/ISSUE_TEMPLATE/feature_request.md
@@ -7,18 +7,18 @@ assignees: ''
 
 ---
 
-### Is your feature request related to a problem? Please describe
+## Is your feature request related to a problem? Please describe
 
 A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
 
-### Describe the solution you'd like
+## Describe the solution you'd like
 
 A clear and concise description of what you want to happen.
 
-### Describe alternatives you've considered
+## Describe alternatives you've considered
 
 A clear and concise description of any alternative solutions or features you've considered.
 
-### Additional context
+## Additional context
 
 Add any other context or screenshots about the feature request here.
diff --git a/project_template/.github/ISSUE_TEMPLATE/bug_report.md b/project_template/.github/ISSUE_TEMPLATE/bug_report.md
index 7c1a33a..7c45275 100644
--- a/project_template/.github/ISSUE_TEMPLATE/bug_report.md
+++ b/project_template/.github/ISSUE_TEMPLATE/bug_report.md
@@ -7,7 +7,7 @@ assignees: ''
 
 ---
 
-### Summary
+## Summary
 
 Provide a brief summary of the issue you're encountering.
 
@@ -19,15 +19,15 @@ Describe the steps you took when you encountered the bug:
 2. ...
 3. ...
 
-### Expected Behavior
+## Expected Behavior
 
 What did you expect to happen when you followed the steps above?
 
-### Actual Behavior
+## Actual Behavior
 
 Describe what actually happened. Include details like error messages or unexpected outcomes.
 
-### Technical Details
+## Technical Details
 
 Any relevant technical information. Include as much information as possible, including:
 
@@ -35,10 +35,10 @@ Any relevant technical information. Include as much information as possible, inc
 - **Browser/Application Version**:
 - **Additional relevant software versions**:
 
-### Proposed Solutions (Optional)
+## Proposed Solutions (Optional)
 
 If you have any suggestions on how to fix this issue, please share them here.
 
-### Screenshots
+## Screenshots
 
 Attach any screenshots that help illustrate the issue.
diff --git a/project_template/.github/ISSUE_TEMPLATE/feature_request.md b/project_template/.github/ISSUE_TEMPLATE/feature_request.md
index 5df86d2..5b86f27 100644
--- a/project_template/.github/ISSUE_TEMPLATE/feature_request.md
+++ b/project_template/.github/ISSUE_TEMPLATE/feature_request.md
@@ -7,18 +7,18 @@ assignees: ''
 
 ---
 
-### Is your feature request related to a problem? Please describe
+## Is your feature request related to a problem? Please describe
 
 A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
 
-### Describe the solution you'd like
+## Describe the solution you'd like
 
 A clear and concise description of what you want to happen.
 
-### Describe alternatives you've considered
+## Describe alternatives you've considered
 
 A clear and concise description of any alternative solutions or features you've considered.
 
-### Additional context
+## Additional context
 
 Add any other context or screenshots about the feature request here.
diff --git a/project_template/Makefile.jinja b/project_template/Makefile.jinja
index e149a49..e0ab16b 100644
--- a/project_template/Makefile.jinja
+++ b/project_template/Makefile.jinja
@@ -34,6 +34,10 @@ test:  ## Run the tests and check coverage.
 mypy:  ## Run mypy.
 	{{ package_manager }} run mypy {{ module_name }}
 
+.PHONY: run
+run:  ## Run the python script
+	{{ package_manager }} run python -m {{ module_name }}
+
 .PHONY: install
 install:  ## Install the dependencies excluding dev.
 	{% if package_manager == "poetry" -%}
diff --git a/project_template/{{module_name}}/__main__.py.jinja b/project_template/{{module_name}}/__main__.py.jinja
new file mode 100644
index 0000000..ea5ac9f
--- /dev/null
+++ b/project_template/{{module_name}}/__main__.py.jinja
@@ -0,0 +1,26 @@
+from decimal import Decimal
+
+from {{module_name}}.calculator import Calculator
+
+
+def main() -> None:
+    calculator = Calculator()
+
+    total = calculator.add(Decimal("10.50"))
+    print(f"After add: {total}")
+
+    total = calculator.subtract(Decimal("2.25"))
+    print(f"After subtract: {total}")
+
+    total = calculator.multiply(Decimal("3"))
+    print(f"After multiply: {total}")
+
+    total = calculator.divide(Decimal("4"))
+    print(f"After divide: {total}")
+
+    calculator.reset_cumulative_total()
+    print(f"After reset: {calculator.cumulative_total}")
+
+
+if __name__ == "__main__":
+    main()