A helium balloon seller wishes to have a computer program to help with her business. When someone makes a purchase, they buy spherical balloons all of the same size, and she needs to know the total volume of helium needed to inflate them all. 2 items are entered into the program - the radius of a spherical balloon and number of balloons bought. Then, your program should calculate the volume of ONE balloon. You will have to find a formula for the volume of a sphere to do this. Save the answer in a processing variable. Then, the total volume of all balloons needs to be calculated. This is easy since you know the volume of one balloon and you also know the number of balloons. This total volume of all balloons (which is the amount of gas needed) is then displayed and the program stops.

Write up an IPO chart for this problem. Be sure to have an "Input, Processing, Output and Algorithm" part.