// calculator

function calc(i,j,k,l){
	var ky = k/100;
	var a = i*j;
	var c = i;
	var d = c*ky;
	var e = l*d;
	var f = e-a;
	var g = j;
	var h = a/d;
	
	document.getElementById("a").innerHTML = a;
	document.getElementById("c").innerHTML = c + " responders";
	document.getElementById("d").innerHTML = d + " buyers";
	document.getElementById("e").innerHTML = "$" + e;
	document.getElementById("f").innerHTML = "$" + f;
	document.getElementById("g").innerHTML = "$" + g + " per responder";
	document.getElementById("h").innerHTML = "$" + h + " per buyer";
}