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FirstOuterInnerLast |
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Example >>> |
34 x 52 = (30 + 4)·(50 + 2) |
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First |
(A + B)·(C + D) = AC + AD + BC + BD |
= 30 x 50 |
= 1500 |
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Outer |
(A + B)·(C + D) = AC + AD + BC + BD |
= 30 x 2 |
= 60 |
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Inner |
(A + B)·(C + D) = AC + AD + BC + BD |
= 4 x 50 |
= 200 |
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Last |
(A + B)·(C + D) = AC + AD + BC + BD |
= 4 x 2 |
= 8 |
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= 1768 |
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