\frac{7}{20} = \frac{7 * 5}{20 * 5} = \frac{35}{100} = 0,35
\frac{3}{50} = \frac{3 * 2}{50 * 2} = \frac{6}{100} = 0,06
\frac{3}{5} = \frac{3 * 2}{5 * 2} = \frac{6}{10} = 0,6
\frac{7}{25} = \frac{7 * 4}{25 * 4} = \frac{28}{100} = 0,28
\frac{3}{500} = \frac{3 * 2}{500 * 2} = \frac{6}{1000} = 0,006
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