697 номер помогите пожалуйста А и Б прошу

$1) \frac{3}{4}*1,8=0,75*1,8=1,35$
$2)1,35*1 \frac{1}{5} =1,35*1,2=1,62$
$3)1,62:0,07=23 \frac{1}{7}$
$4) \frac{1}{5} :0,49= \frac{1}{5} : \frac{49}{100} = \frac{1}{5} * \frac{100}{49} = \frac{20}{49}$
$5) \frac{20}{49} *2 \frac{5}{8} = \frac{20}{49} * \frac{21}{8} = \frac{15}{14}$
$6)23 \frac{1}{7} : \frac{15}{14}= \frac{162}{7}* \frac{14}{15} = \frac{108}{5} =21,6$
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$1)0,2*6,2=1,24$
$2)1,24:0,31=4$
$3) \frac{5}{6} *0,3= \frac{5}{6} * \frac{3}{10} = \frac{1}{4} =0,25$
$4)4-0,25=3,75$
$5)1 \frac{4}{11} *0,22= \frac{15}{11} * \frac{22}{100} = \frac{3}{10} =0,3$
$6)0,3:0,01=30$
$7)2+30=32$
$8)3,75:32= \frac{375}{100} * \frac{1}{32} = \frac{375}{3200} = \frac{15}{128}$