Brain Teaser

This is a 5th grade math problem. If you can't stand word math problems, just delete now. If you can open the > spreadsheet, you'll see it's a very small list of people who have gotten the correct number. This is not a trick question. This is a real math problem so don't say that a bus has no legs.

There are 7 girls in a bus.

Each girl has 7 backpacks.

In each backpack, there are 7 big cats.

For every big cat there are 7 little cats.

Question: How many legs are there in the bus?

try leaving me an answer... (: will email you if you're right... :)