Breaking down a long math calculation

[Paul_Wilkins]

@nofel

it says Math.toFixed is not a function,

Ahh, my bad on that, it was late sorry. The following will work for you, assuming that totalRate is a percentage in decimal form.

totalRate = 0.0564545435;
aprPrecentage = (totalRate * 100).toFixed(2);

@nofel

i seen it before, why does it take () as function and variable in it as function args?

There are a few different ways of using it. The toFixed function is a part of the Number object. The toFixed function gives a string version of the number, so that some formatting can be applied. The argument that you give to toFixed says to how many decimal places the string version of should be shown as.