working backwards.
for 1 big cat, there are 7 little cats
in 1 back pack, there are 7 big cats...therefore 56 cats in 1 backpack.
Each girl has 7 backpacks, so each girl is carrying 7*56 = 392 cats
7 girls each carrying 392 cats each = 2744 cats, each cat has 4 legs...10976 legs.
With the 7 girls each having 2 legs each. 14 + 10976 = 10990 legs?
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