Помогите решить дробь. пропишите все действия, пожалуйста.

1)
$1 \frac{1}{5} \div ( \frac{17}{40} + \frac{6}{10} - \frac{5}{1000} ) = \frac{6}{5} \div ( \frac{425}{1000} + \frac{600}{1000} - \frac{5}{1000} ) = \frac{6}{5} \div \frac{1020}{1000} = \frac{6}{5} \times \frac{100}{102} = \frac{20}{17}$
2)
$\frac{20}{17} \times 1 \frac{7}{10} = \frac{20}{17} \times \frac{17}{10} = 2$
3)
$\frac{5}{6} + 1 \frac{1}{3} - 1 \frac{23}{30} = \frac{25}{30} + \frac{40}{30} - \frac{53}{30} = \frac{12}{30} = \frac{2}{5}$
4)
$\frac{2}{ \frac{2}{5} } = 2 \times \frac{5}{2} = 5$
5)
$4 \frac{75}{100} + 7 \frac{1}{2} = \frac{475}{100} + \frac{15}{2} = \frac{475}{100} + \frac{750}{100} = \frac{1225}{100} = \frac{49}{4}$
6)
$33 \div 4 \frac{5}{7} = 33 \div \frac{33}{7} = 7$
$\frac{49}{4} \div 7 = \frac{7}{4}$
7)
$\frac{7}{4} \div \frac{25}{100} = \frac{7}{4} \times \frac{100}{25} = 7$