app.js

function Calculate() {
    var first_e = document.getElementById("cash").value;
    var second_e = document.getElementById("gold").value;
    var therd_e = document.getElementById("silver").value;
    console.log(first_e)
    console.log(second_e)
    console.log(therd_e)
    for (var i = 0; i < Number(second_e.length); i++) {
        if (second_e[i] <= Number(second_e)) {
            second_e = 300000 * Number(second_e);
        }
    }
    for (var i = 0; i < Number(therd_e.length); i++) {
        if (therd_e[i] <= Number(therd_e)) {
            therd_e = 150000 * Number(therd_e);
        }
    }
    var final = Number(first_e) + Number(second_e) + Number(therd_e);
    document.getElementById("result").innerHTML = " ZAKAT PAYABLE = " + Math.floor(final / 40) + ";";
}