Fix double rounding issues for multipleOf assertion

[OptimumCode]

Resolves #70

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.53%. Comparing base (1455710) to head (a8258bc).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #71      +/-   ##
==========================================
+ Coverage   90.51%   90.53%   +0.02%     
==========================================
  Files          90       90              
  Lines        2087     2093       +6     
  Branches      520      521       +1     
==========================================
+ Hits         1889     1895       +6     
  Misses         40       40              
  Partials      158      158              

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