Solve this Puzzle: -

Drill this out and see if you are a mathematician!

Scenario:

There are 7 girls inside the Bus traveling to New York,
Each girl has 7 very Luxurious LV Bags,
Inside each LV Bag, there are 7 Big Black Persian Cats,
Each Big Black Persian Cat is taking care of has 7 Cute Little Cats,
All Cats have 4 Legs each!

Question: How many Legs are there inside the bus?

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.......... check out comments for answer !!