三、计算下面各题，怎样简便就怎样计算。
$20 × \dfrac{3}{7} + 3 ÷ 7$
$13 - 60 × (\dfrac{1}{5} - \dfrac{1}{6})$
$3.4 × 2.81 + 0.66 × 28.1$
$5 ÷ \dfrac{7}{16} + 2 ÷ \dfrac{7}{16}$
$\dfrac{1}{10} ÷ \dfrac{1}{15} + \dfrac{4}{3} × \dfrac{3}{8}$
$\dfrac{5}{9} + \dfrac{8}{9} - 0.625 - 0.375$
$2.5 × 44$
$45 × (\dfrac{2}{3} + \dfrac{7}{15} - \dfrac{3}{5})$
$4.82 - 5.2 ÷ 0.8 × 0.6$
$256 - 36 ÷ 15 × 102$
$8.2 - 3.2 ÷ 0.4 + 0.6$
$37.5\% - \dfrac{3}{20} + 62.5\% - \dfrac{17}{20}$
$\dfrac{3}{4} × \dfrac{5}{6} + \dfrac{1}{6} ÷ \dfrac{4}{3}$
$[\dfrac{5}{6} - (\dfrac{3}{8} + \dfrac{1}{6})] × \dfrac{8}{9}$
$\dfrac{3}{5} × 8.8 + 0.6 × \dfrac{1}{5} + 60\%$

三、9 11 28.1
$16 2 \frac{4}{9}$
110 24 0.92
11.2 0.8 0
$\frac{3}{4} \frac{7}{27} 6$