Solutions by everydaycalculation.com
1st number: 20 0/2, 2nd number: 10/25
This multiplication involving fractions can also be rephrased as "What is 40/2 of 10/25?"
402 × 1025 is 81.
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Related: 80/2×10/25 40/2×20/25 40/4×10/25 40/2×10/50 40/2×30/25 40/6×10/25 40/2×10/75 40/2×50/25 40/10×10/25 40/2×70/25 40/14×10/25
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