Solutions by everydaycalculation.com
690421 is already in the simplest form. It can be written as 1.638955 in decimal form (rounded to 6 decimal places).
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Equivalent fractions: 1380/842 2070/1263 3450/2105 4830/2947
More fractions: 1380/421 690/842 2070/421 690/1263 691/421 690/422689/421 690/420
© everydaycalculation.com