money exchange

var CashAmount = (amount) =>  {
	
	this.amount = amount.toFixed(2);	
}



CashAmount.prototype.totalInPennies = function() {
	 var amountInPennies = this.amount.toString().split("");
	 amountInPennies.splice(-3,1);
	 return parseInt(amountInPennies.join(""));
}

CashAmount.prototype.addDoubleAmount = function(value) {
	var y = (this.amount.totalInPennies() + value);
	this.amount = y;
}

CashAmount.prototype.quantityOfEachDenomination = function() {
	var demoninations = {
		hundres: 10000,
		fifties: 5000,
		twenties: 2000,
		tens: 1000,
		fives: 500,
		ones: 100, 
		quarters: 25,
		dimes: 10,
		nickels: 5,
		pennies: 1
	}
	var demoninationCount = this.amount.totalInPennies();


	while ( demoninationCount > 0 ) {
		for( var key in demoninations ) {
			if(demoninations[key] / )
		}
	}
	
}

CashAmount.prototype.toDouble = function() {
	return this.amount;
}

CashAmount.prototype.toDoubleString = function() {
	return this.amount.toString();
}