You’re at a restaurant, it’s the end of a meal, and now you have to figure out how to split the bill and tip your waiter correctly. The larger the group, the larger the bill – and your headache. But never fear, Siri’s good at math. All you need to know is one equation: “What is [percentage] tip of [price] split by [how many] people?” Or if you just need to know what 20 percent of $23 is, simply dictate “23 dollars plus 20 percent” for your new total.

Screenshot