Math and conversions aren't everyone's strong suit, and that's all right. With this iOS 18 trick, you don't have to open your ...

Key fact If your calculator has an ANS button, use it to keep the value from one iteration to substitute into the next iteration. To solve the equation on a calculator with an ANS, type 2 =, then ...

In particular, they show that any quantum computation can be encoded into an instance of solving linear equations, even with the restrictions required for their quantum solver to be efficient.