you were having difficulties with your exam and you forgot the formula

you were shy and didn’t know what to do, so you decided to call you professor miles, miles was a strict professor to everyone

“Professor?” you tried to get his attention “Yes?” he said then walk up to you “I can’t get this number 3” you said, as he lean in next to you “You just need to add this two numbers and done” he said, staring at you while he points at your test paper