My sister-in-law called in a panic the other day:
Come help me with math! Now!!!
Good thing we are a family of math nerds. Between my husband and myself, we got her covered all the way from long division to calculus and perhaps even differential equations if the need should arise.
No sweat, Mary! We’re on the way!
We immediately donned our superhero capes and raced across town in the Batmobile.