计算下面各题。
$104\div(1.69\div13\times8)$ $8.5 - 8.5\div5 - 4.6$ $[8.36-(1.8 + 3.56)]\div2.5$
$(16\times\frac{3}{8}+4)\div\frac{2}{7}$ $85.6\div(43\times2 - 0.4)$ $(0.375\times80 - 3.5)\div50\%$
$56\div\frac{7}{8}\times2 - 29$ $816\div12 - 36\times1.1$ $\frac{4}{5}\times[(\frac{1}{2}-\frac{1}{5})\div\frac{8}{15}]$
$\frac{1}{13}+\frac{12}{13}\times(\frac{5}{2}-\frac{1}{3})$ $\frac{5}{6}+\frac{7}{9}\div\frac{7}{2}\times\frac{3}{4}$ $\frac{3}{8}\times[\frac{8}{9}\div(\frac{5}{6}-\frac{3}{4})]$
$7 - 7\times\frac{2}{7}+\frac{5}{7}$ $\frac{5}{8}\div(\frac{3}{5}-\frac{2}{5}-\frac{1}{8})$ $\frac{5}{12}\div[\frac{1}{5}\times(\frac{1}{3}-\frac{1}{4})]$

100 2.2 $\frac{6}{5}$
35 1 53
99 28.4 $\frac{9}{20}$
$2\frac{1}{13}$ 1 4
$5\frac{5}{7}$ $\frac{25}{3}$ 25