Let D be the parallelogram in the xy-plane spanned by the vectors (3, 8) and (3, 4). Apply the Change of Variables Formula to the map G (u, v) = (3u + 3v, 4u + 8v) to evaluate ff xy dA as an integral over Do = [0, 1] × [0, 1]. (Use decimal notation. Give your answer as a whole number.) Jxy a xydA =

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