Solutions by everydaycalculation.com
642421 is already in the simplest form. It can be written as 1.524941 in decimal form (rounded to 6 decimal places).
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Equivalent fractions: 1284/842 1926/1263 3210/2105 4494/2947
More fractions: 1284/421 642/842 1926/421 642/1263 643/421 642/422641/421 642/420
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