5 * 2 1/5=? 4 2/7 * 2=? 2 2/25 * 1 9/16=? 13/43 * 8 7/26=? Помогите, пожалуйста!

Решите задачу:

$5*2 \frac{1}{5}=5* \frac{11}{5}=11$

$2 \frac{2}{25}*1 \frac{9}{16}= \frac{52}{25}* \frac{25}{16}= \frac{52}{16}= \frac{13}{4}=3 \frac{1}{4}$

$4 \frac{2}{7}*2= \frac{16}{7}*2= \frac{32}{7} =4\frac{4}{7}$

$\frac{13}{43}*8 \frac{7}{26}= \frac{13}{43}* \frac{208}{26}= \frac{104}{43} =2 \frac{18}{43}$