Solutions by everydaycalculation.com
21001111 is already in the simplest form. It can be written as 1.890189 in decimal form (rounded to 6 decimal places).
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Equivalent fractions: 4200/2222 6300/3333
More fractions: 4200/1111 2100/2222 6300/1111 2100/3333 2101/1111 2100/11122099/1111 2100/1110
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