For all its sordid history, the gossip-news site Gawker left us with a lasting gem: The “How Many Pizzas Should You Order” formula. It’s elegant in its simplicity: (# of people) × 3/8.

What if some of the people are adults and some are kids? Large pizzas or Medium? No more questions! Just use the formula, and round up to the nearest pizza. It works. Your quality of life will improve.