Evaluate
1400
Factor
7\times 2^{3}\times 5^{2}
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3.5\times 20^{2}
Multiply 0.5 and 7 to get 3.5.
3.5\times 400
Calculate 20 to the power of 2 and get 400.
1400
Multiply 3.5 and 400 to get 1400.
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