If you type in a name wrong, you will not get the calculations correct. You will not get any calculations if you click "cancel" after confirming that you want to add more people. For both of these issues, you must reload the page and re-type the names.
Toppings available include: mushrooms, onions, peppers, olives, pepperoni, ham, pineapple, extra cheese, sausage, and bacon. However, your guests might not like all of them! Check the calculation below to see what toppings everyone would like, and how many slices you will need.
Also remember to use control+u to view the code!