function calc(nc){
	var $numCalc01 = Math.floor(nc * 300 + 60000)*1.05;
	
	$numCalc01 = ""+$numCalc01;

	var $numCalc02 = $numCalc01.replace(/,/g, '');
	var $numCalc03 = $numCalc02.replace(/(\d{1,3})(?=(\d{3})+(?!\d))/g, "$1,");
	
	document.getElementById("chrg").innerHTML = $numCalc03
}