二、计算下面各题，怎样简便就怎样计算。
$\frac{1}{5}\times\frac{10}{19}+\frac{9}{19}\div5$ $41\times9.9 + 41\times0.1$ $33.02 - (148.4 - 90.85)\div2.5$
$9.6\times2.7\div81$ $\frac{13}{5}\times\frac{7}{9}+\frac{2}{5}\div\frac{9}{7}$ $7.8 - 6.4 + 3.2 - 2.6$
$24\times10.5 - 3549\div39$ $(\frac{4}{5}+\frac{1}{4})\div\frac{7}{3}+\frac{7}{10}$ $\frac{5}{9}+\frac{7}{23}+\frac{4}{9}+\frac{16}{23}$
$\frac{5}{12}\div\frac{1}{24}+\frac{5}{12}\times6$ $37\times60\%+37\times\frac{2}{5}+37$ $[(1 - \frac{3}{5})\times\frac{2}{5}]\div4$
$43\times\frac{43}{44}$ $(\frac{1}{4}+\frac{1}{6})\times4\times6$ $7.5\div[15\div(0.6 - 0.3)]$

$\frac{1}{5}$ 410 10
0.32 $\frac{7}{3}$ 2
161 $\frac{23}{20}$ 2
$\frac{25}{2}$ 74 $\frac{1}{25}$
$42\frac{1}{44}$ 10 0.15