Помогите с 5. 1) и 2) За Ранее Спасибо!!!

Решите задачу:

$14\frac{7}{15} -3 \frac{3}{23} * \frac{23}{27}-1 \frac{1}{5} * \frac{1}{6}= 11,6$

$1) 3 \frac{3}{23}* \frac{23}{27} = \frac{72}{23} * \frac{23}{27}= \frac{8}{3}$

$2) 1 \frac{1}{5} * \frac{1}{6} = \frac{6}{5} * \frac{1}{6} = \frac{1}{5}$

$3) 14 \frac{7}{15}- \frac{8}{3} = \frac{217}{15} - \frac{8}{3} = \frac{217 - 40}{15} = \frac{177}{15}$

$4) \frac{177}{15} - \frac{1}{5} = \frac{59}{5} - \frac{1}{5} = \frac{58}{5} =11,6$

$(5 \frac{8}{9} :1 \frac{17}{36}+1 \frac{1}{4} )* \frac{5}{21} =1,25$

$1) 5 \frac{8}{9}: 1\frac{17}{36} = \frac{53}{9}: \frac{53}{36} = \frac{53}{9} * \frac{36}{53} = 4$

$2) 4 + 1 \frac{1}{4}=3 \frac{4}{4}+1 \frac{1}{4}= 4\frac{5}{4} = \frac{21}{4}$

$3) \frac{21}{4} *\frac{5}{21}= \frac{5}{4} =1,25$