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

[seamusd.livejournal.com]

406, not counting the bus driver, who wasn't mentioned in the problem.