Programming Question

[Pepe Silvia]

Scanner scan = new Scanner (System.in);
System.out.println ("Enter a monetary amount: ");
double startCash = scan.nextDouble();
System.out.println ((int)(startCash / 10) + " ten dollar bills");
double cashleft = startCash % 10.0;
System.out.println ("Cash left: " + cashleft);

> run CashBreakdown
Enter a monetary amount:
[47.63]
4 ten dollar bills
Cash left: 7.630000000000003

How I fix that; I was going to cast to float and then to double again, but I know there's another way which I've forgotten

A friend of mine said something about telling it how many decimal places ot use, but he doesn't use java so i don't know which method that'd be (if it exists)

Edit: Casting it each time to a float when printing, as in System.out.println ("Cash left: " + (float) cashleft); manages to trim the decimal to 2.63 like I want it to, but I still want to know if there's an easier way