Off by a trillion

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In this General Electric promotional photo from 1953 Mrs. Connie Hodgson, of Syracuse, N.Y., displays her figure and figures after taking on GE's Office of Air Research Automatic Computer in a mathematical challenge. She was one of a half dozen intelligent adults multiplying 8,645,392,175 by 8,645,392,175.

Mrs. Hodgson is pointing to the line where she forgot to carry a one and ended up one trillion off in her product. She shouldn't feel too bad, none of the humans — who took from 4 ½ to over 8 minutes — got the answer right. The correct answer, by the way, is 74,742,805,859,551,230,625 and was solved by OARAC in a fraction of a second.