Solutions by everydaycalculation.com
The simplest form of 21121980 is 1615.
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Equivalent fractions: 4224/3960 1056/990 6336/5940 704/660
More fractions: 4224/1980 2112/3960 6336/1980 2112/5940 2113/1980 2112/19812111/1980 2112/1979
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