Решите 847 с обьяснениями

Решите задачу:

$\frac{57(62-32}{28*19} = \frac{57}{28}* \frac{28}{19} =3$
$\frac{35(28+32)}{60*15} = \frac{35}{60} * \frac{60}{15} = \frac{35}{15} =2 \frac{1}{3}$
$\frac{48(31+19)}{16*100} = \frac{48}{16} * \frac{50}{100} =3 \frac{1}{2}$
$\frac{17(96-24)}{48*85} = \frac{17}{48} * \frac{72}{85} = \frac{1}{6} * \frac{9}{5} = \frac{1}{2} * \frac{3}{5}$