... Despite questioning this portrayal of Maho as needing to ask her younger sister about basic arithmetic instead of the other way around, I still find it very funny.
Wow~!
Convenient!*Lalala~♪**Da...?**Daaar**Daaaar**Splosh**Splosh*AaaaaaahTea shopWe have tasty, tasty tea!The tea shop is all done!Hmmm, hmmm, hmmmmmmYep!Are you sure?220 yen!H-Hey, what's 90 yen and 130 yen put together?*Dash*I'll buy both!Umm, 130 yen.Tomato!90 yen.How much is a carrot?A supermarket! I sell everything.*Ma-hooo**Ma-ho*What shop is this!?