Solutions by everydaycalculation.com
1st number: 10 0/4, 2nd number: 12 0/4
404 + 484 is 221.
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Related: 80/4+48/4 40/4+96/4 40/8+48/4 40/4+48/8 40/12+48/4 40/4+48/12 40/20+48/4 40/4+48/20 40/28+48/4 40/4+48/28
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