$\begin{align}
& \frac{7,2:2\times 57,2+2,86\times 2\times 64}{4+4+8+12+20+...+220} \\
& =\frac{7,2\times 28,6+2,86\times 2\times 64}{4+4+8+12+20+32+52+84+136+220} \\
& =\frac{7,2\times 28,6+28,6\times 2\times 6,4}{4+[(4+8)+12]+[(20+32)+52]+[(84+136)+220]} \\
& =\frac{28,6\times (7,2+12,8)}{4+12\times 2+52\times 2+220\times 2}=\frac{28,6\times 20}{2\times (2+12+52+220)} \\
& =\frac{286\times 2}{2\times 286}=1 \\
\end{align}$