using an expanded algorithm
posted by acid burn .
How do I use an array to find partial products for 4x36?

http://wiki.answers.com/Q/Explain_how_you_can_use_an_array_to_find_partial_products_for_4_x_36

27x3e 21

divide the rectangle by tens and ones for each factor.then complete the calculation.

Use an array 4x36
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