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To multiply 12x12, imagine that you have two extra fingers on each of your hands, which gives you a run from 6 to 12 from your pinkie to the second extra finger. That also means seven fingers on each of your hands. You now have a total of fourteen 10's, since each of your fingers represents 10, which gives us 140. Then you only have to multiply the number of opposing extra fingers, which gives us 4, and a grand total of 144.

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