Question about rounding?

Question

JavaScript

Hello!
js newbie, please help.
There is a simple calculator.

function calcReturn(amount, days) {
      return amount+days*(amount*0.058);
  }

When some digits are combined, it produces numbers like 125.19999999999999. How to round? I found the Math.round method, but how do I apply it?

Answer 1

function calcReturn(amount, days) {
      return Math.round(amount+days*(amount*0.058));
  }

Answer 2

Math.round(125.19999999999999);