Grandma is shocked by the multiplying Ampleforth and shocked again by the missing Ampleforth

Grandma: Sonny, who put more coins in my chest?

Grandson: Nobody did grandma since the first time Sonny gave those coins.

Grandma: That’s funny, maybe Grandma’s getting senile? Grandma remembered it was not full.

Grandson: Wait Grandma, let me check. Oh the price is above $1 for the whole week. You are not senile Grandma, you are supposed to have more coins now.

Grandma: Are you saying the coin multiplied by itself?! What kind of coin make babies?

Grandson: It is called Ampleforth Grandma. The price is above $1 which means more people demands more coins. So Lord Ampleforth supplied us more coins to sell to them Grandma!

Grandma: Then let’s go to the market and sell to them Sonny!

Grandma: Sonny, did a thief broke into the house!?

Grandson: The security guard saw nobody entered the house Grandma.

Grandma: Then why are there less coins?