any math expert is there pls answer this question

SUDHIR & PRADEEP JI (CA FINAL+LLB + DISA) (2299 Points)

18 March 2010  

 There's a bus with 7 girls
> Each girl carries 7 bags
>Each bag carries 7 big cats
>
> Each big cat carries 7 smaller cats
>
> (All the cats have 4 legs)
>
> Question: how many legs are on the bus?

 pls any one reply the correct answer

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