Номер 577 Срочно помогите пж

577.
$1) \frac{7}{3} \times \frac{6}{5} = \frac{14}{5} = 2 \frac{4}{5}$
$2) \frac{25}{9} \times \frac{18}{5} = 10$
$3) \frac{5}{2} \times \frac{8}{5} = 4$
$4) \frac{34}{9} \times \frac{18}{17} = 4$
$5) \frac{15}{2} \times \frac{34}{15} = 17$
$6) \frac{31}{6} \times \frac{22}{7} = \frac{31 \times 11}{3 \times 7} = \frac{341}{21} = 16 \frac{5}{21}$
$7) \frac{24}{7} \times \frac{7}{3} = 8$
$8) \frac{22}{3} \times \frac{24}{11} = 16$