6) 5 4/19 * 3 3/7 + 1 15/19 : 25/7

б) \(5 \frac{4}{19} \cdot 3 \frac{3}{7} + 1 \frac{15}{19} : \frac{25}{7} = \frac{99}{19} \cdot \frac{24}{7} + \frac{34}{19} : \frac{25}{7} = \frac{99 \cdot 24}{19 \cdot 7} + \frac{34}{19} \cdot \frac{7}{25} = \frac{2376}{133} + \frac{238}{475} = \frac{2376}{133} + \frac{238}{475} = \frac{1128600 + 31694}{63175} = \frac{1160294}{63175} = 18 \frac{21944}{63175}\)