When you go out to eat, you always tip 20% of the bill amount. But who's got the time to calculate the right tip amount every time? Not you that's for sure! You're making a program to calculate tips and save some time. Your program needs to take the bill amount as input and output the tip as a float. Sample Input 50 Sample Output 10.0

Use a physical stopwatch to record the length of time it takes to run the program. calculate the difference obtained by calls to the method system.currenttimemillis() just before the start of the algorithm and just after the end of the algorithm. calculate the difference obtained by calls to the method system.currenttimemillis() at the start of the program and at the end of the program so that the elapsed time includes the display of the result. use the value returned by the method system.currenttimemillis() just after the end of the algorithm as the elapsed time.