jQuery - Calculate inputs

js - calc input

	var week = $('.week');
	var month= $('.month');
	var year = $('.year');

	function weekCalc(sender, args) {
	    var value = sender.val();
	    
	    var milesPerMonth = value * 4.35;
	    var milesPerYear = value * 52;
	    
	    month.val(Math.round(milesPerMonth));
	    year.val(Math.round(milesPerYear));
	}

	function monthCalc(sender, args) {
	    var value = sender.val();
	    
	    var milesPerWeek = value / 4.35;
	    var milesPerYear = value * 12;
	    
	    week.val(Math.round(milesPerWeek));
	    year.val(Math.round(milesPerYear));
	}

	function yearCalc(sender, args) {
	    var value = sender.val();
	    
	    var milesPerWeek = value / 52;
	    var milesPerMonth = value / 12;
	    
	    week.val(Math.round(milesPerWeek));
	    month.val(Math.round(milesPerMonth));
	}

	week.change(function () {
	    weekCalc($(this));
	});

	week.keyup(function () {
	    weekCalc($(this));
	}).keyup();

	month.change(function () {
	    monthCalc($(this));
	});

	month.keyup(function () {
	    monthCalc($(this));
	}).keyup();

	year.change(function () {
	    yearCalc($(this));
	});

	year.keyup(function () {
	    yearCalc($(this));
	}).keyup();