Me, teaching the third grade:
Ethan (pointing to a problem in a math book): Rachel, do you know how to do three digit subtraction with the regrouping strategy?
Rachel: I sure do! Here…. lemme find.. oh got it. This little machine is called a calculator. Punch in the numbers and… 152. That’s the answer. Here, you can keep it. I have one on my phone. Let me know if you need anything else!