Solutions by everydaycalculation.com
1st number: 18/20, 2nd number: 11 1/4
1820 - 454 is -20720.
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Related: 36/20-45/4 18/20-90/4 18/40-45/4 18/20-45/8 54/20-45/4 18/60-45/4 18/20-45/12 90/20-45/4 18/20-45/20 18/20-45/28
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