[tex]53 \frac{2}{3} - 22 \frac{14}{15} \div 2 \frac{2}{3} \div (20 \frac{1}{15} + 25 \frac{5}{7} \div 1 \frac{1}{35} )[/tex]
[tex]( \frac{161}{3} - \frac{344}{15} \div \frac{8}{3} ) \div ( \frac{301}{15} + \frac{180}{7} \div \frac{36}{35} )[/tex]
[tex]( \frac{161}{3} - \frac{344}{155} \times \frac{3}{8} ) \div ( \frac{301}{15} + \frac{180}{7} \times \frac{35}{36} )[/tex]
[tex] (\frac{161}{3} - \frac{43}{5} ) \div ( \frac{301}{15} + \frac{25}{1} )[/tex]
[tex] \frac{805 - 129}{15} \div \frac{301 + 375}{15} [/tex]
[tex] \frac{676}{15} \times \frac{15}{676} [/tex]
[tex] = 1[/tex]
