function Out(){

var oneSum = document.nform.one.value.replace(",",".");
if (isNaN(oneSum)) oneSum="0";
		
var tuSum = document.nform.tu.value.replace(",",".");
if (isNaN(tuSum)) tuSum="0";

var threeSum = document.nform.three.value.replace(",",".");
if (isNaN(threeSum)) threeSum="0";

document.nform.exit.value=(oneSum*tuSum*threeSum/ 6000);
}