even more cats

[low_delta]

This is a 5th grade math problem.

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?

Comments

[mummm.livejournal.com]

Oh yes... as mentioned in a comment above...
Do all the girls have two legs? That is not stated.