Solutions by everydaycalculation.com
The simplest form of 21201820 is 10691.
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Equivalent fractions: 4240/3640 1060/910 6360/5460 424/364
More fractions: 4240/1820 2120/3640 6360/1820 2120/5460 2121/1820 2120/18212119/1820 2120/1819
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