// JavaScript Document
function calc(){
  var a1= document.getElementById('a1').value;
	var a2= document.getElementById('a2').value;
	var a3= document.getElementById('a3').value;
        var sum = (((Number(a1)/Number(a2)) *Number(a3)*52)-((Number(a1)/(Number(a2)*0.1 + Number(a2)))*Number(a3)*52));
	document.getElementById("s1").value=" "+Math.round(sum);
	var sum1 = (((Number(a1)/Number(a2)) *Number(a3)*52)-((Number(a1)/(Number(a2)*0.25 + Number(a2)))*Number(a3)*52));
	document.getElementById("t1").value=" "+ Math.round(sum1);
	var sum2 = (((Number(a1)/Number(a2)) *Number(a3)*52)-((Number(a1)/(Number(a2)*0.50 + Number(a2)))*Number(a3)*52));
	document.getElementById("u1").value=" "+ Math.round(sum2);
	var sum3 = sum * 5;
	document.getElementById("s2").value=" "+ Math.round(sum3);
	var sum4 = sum1 * 5;
	document.getElementById("t2").value=" "+ Math.round(sum4);
	var sum5 = sum2 * 5;
	document.getElementById("u2").value=" "+ Math.round(sum5);
	var sum6 = sum * 10;
	document.getElementById("s3").value=" "+ Math.round(sum6);
	var sum7 = sum1 * 10;
	document.getElementById("t3").value=" "+ Math.round(sum7);
	var sum8 = sum2 * 10;
	document.getElementById("u3").value=" "+ Math.round(sum8);
}