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Решите задачу:

$\frac{57,4:4+1 \frac{1}{6}:4 \frac{2}{3}-(2,7+5 \frac{1}{20})*0,8 }{2 \frac{1}{15}-(1 \frac{2}{3}+ \frac{1}{5})} = \\ \frac{14,35+\frac{7}{6}: \frac{14}{3}-(2,7+5,05)*0,8 }{2 \frac{1}{15}-(1 \frac{10}{15}+ \frac{3}{15})} = \\ \frac{14,35+\frac{7}{6}* \frac{3}{14}-7,75*0,8 }{2 \frac{1}{15}-1 \frac{13}{15}} = \\ \frac{14,35+\frac{1}{2}* \frac{1}{2}-6,2 }{1\frac{1}{15}- \frac{13}{15}} = \\ \frac{14,35+\frac{1}{4}-6,2 }{1- \frac{12}{15}} =$
$\frac{14,35+0.25-6,2 }{\frac{3}{15} } =\frac{8.4 }{\frac{1}{5} } =8.4: \frac{1}{5} =8.4*5=42$