Solutions by everydaycalculation.com
1st number: 16 0/4, 2nd number: 4/5
This multiplication involving fractions can also be rephrased as "What is 64/4 of 4/5?"
644 × 45 is 645.
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Related: 64/4×8/5 64/8×4/5 64/4×4/10 64/4×12/5 64/12×4/5 64/4×4/15 64/4×20/5 64/20×4/5 64/4×4/25 64/4×28/5 64/28×4/5 64/4×4/35
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