Since this is not my area of expertise, I searched Google under the key words "arrays "expanded algorithm"" to get these possible sources:
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.
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Math - How do you do arrays and an expanded algorithm
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Math - How do you do arrays and an expanded algorithm. 23 X 17?
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math - explain how to do arrays and an expanded algorithm
math - Arrays and a Expanded Algorithm How I do23x17.
math - how do you do arrays and an expanded algorithm? 23x17?
math - arrays and an expanded algorithm 23 x17 how do I solve this