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The counting principle

Sebastian is going to choose the color, pattern, font, and image for the design of a sweatshirt for his dance team. There are 1010 colors, 44 patterns, 1212 fonts, and 99 images for him to choose from. (The printing company charges a fee to add extra design elements, so he will choose only one of each.)
How many different sweatshirt designs are possible?
  • Your answer should be
  • an integer, like 66
  • a simplified proper fraction, like 3/53/5
  • a simplified improper fraction, like 7/47/4
  • a mixed number, like 1 3/41\ 3/4
  • an exact decimal, like 0.750.75
  • a multiple of pi, like 12 pi12\ \text{pi} or 2/3 pi2/3\ \text{pi}