Пожалуйсиа помогите с математикой !!!!!!!!номер 433!!!!!!!!!!!подробно напишите все!!!!!!

Решите задачу:

$\frac{3}{4}* \frac{5}{7}= \frac{5*3}{4*7}= \frac{15}{28};$
$\frac{1}{8}* \frac{3}{4}= \frac{1*3}{8*4}= \frac{3}{32};$
$\frac{4}{7} *\frac{5}{6}=\frac{4*5}{7*6}=\frac{20}{42};$
$\frac{2}{5}* \frac{7}{11}=\frac{2*7}{5*11}=\frac{14}{55};$
$\frac{1}{2} *\frac{4}{9}=\frac{1*4}{2*9}=\frac{4}{18}=\frac{2}{9};$
$\frac{11}{12}* \frac{8}{9}=\frac{11*8}{12*9}=\frac{11*2}{3*9}=\frac{22}{27};$
$\frac{2}{5}*\frac{3}{2}=\frac{2*3}{5*2}=\frac{3}{5};$
$\frac{11}{15}*\frac{3}{5}=\frac{11*3}{15*5}=\frac{11}{5*5}= \frac{11}{25};$
$\frac{15}{16}*\frac{5}{9}=\frac{15*5}{16*9}=\frac{5*5}{16*3}=\frac{25}{48};$
$\frac{12}{25}*\frac{9}{16}=\frac{12*9}{25*16}=\frac{3*9}{25*4}=\frac{27}{100};$
$\frac{14}{17}*\frac{34}{63}=\frac{14*34}{17*63}=\frac{2*2}{1*9}= \frac{4}{9};$
$\frac{17}{26}*\frac{13}{18}=\frac{17*13}{26*18}=\frac{17*1}{2*18}=\frac{17}{36};$
$(\frac{4}{5})^2=\frac{4}{5}*\frac{4}{5}=\frac{4*4}{5*5}=\frac{16}{25};$
$(\frac{2}{3} )^3=\frac{2}{3}* \frac{2}{3}*\frac{2}{3}=\frac{2*2*2}{3*3*3}=\frac{8}{27};$
$( \frac{1}{7} )^2= \frac{1}{7}* \frac{1}{7}= \frac{1*1}{7*7}= \frac{1}{49};$