(26 2/3 : 6,4)(19,2 : 3 5/9)- (8 4/7 : 2 26/77):(0,5:18 2/3 × 11) - 1/18 Очень прошу, по...

Решите задачу:

$(26 \times \frac{2}{3} \times \frac{10}{64} )( \frac{192}{10} \times \frac{9}{32} ) - ( \frac{60}{7} \times \frac{77}{180} ) \div ( \frac{5}{10} \times \frac{3}{56} \times \frac{11}{1} ) - \frac{1}{18} = \\ \frac{50}{12} \times \frac{387}{80} - \frac{11}{3} \times \frac{112}{33} - \frac{1}{18} = \\ = 20.15625 - \frac{224}{18} - \frac{1}{18} = 7 \times \frac{221}{288}$