$$\frac{\frac{1}{2}\times\frac{1}{4}+3/3[\frac{4}{5}-\frac{7}{2}]}{\frac{5}{2}+2\times\frac{5}{2}}$$
$-\frac{103}{300}\approx -0.343333333$
$$\frac{\frac{1}{2}\times \frac{1}{4}+1\left(\frac{4}{5}-\frac{7}{2}\right)}{\frac{5}{2}+2\times \frac{5}{2}}$$
$$\frac{\frac{1\times 1}{2\times 4}+1\left(\frac{4}{5}-\frac{7}{2}\right)}{\frac{5}{2}+2\times \frac{5}{2}}$$
$$\frac{\frac{1}{8}+1\left(\frac{4}{5}-\frac{7}{2}\right)}{\frac{5}{2}+2\times \frac{5}{2}}$$
$$\frac{\frac{1}{8}+1\left(\frac{8}{10}-\frac{35}{10}\right)}{\frac{5}{2}+2\times \frac{5}{2}}$$
$$\frac{\frac{1}{8}+1\times \frac{8-35}{10}}{\frac{5}{2}+2\times \frac{5}{2}}$$
$$\frac{\frac{1}{8}+1\left(-\frac{27}{10}\right)}{\frac{5}{2}+2\times \frac{5}{2}}$$
$$\frac{\frac{1}{8}-\frac{27}{10}}{\frac{5}{2}+2\times \frac{5}{2}}$$
$$\frac{\frac{5}{40}-\frac{108}{40}}{\frac{5}{2}+2\times \frac{5}{2}}$$
$$\frac{\frac{5-108}{40}}{\frac{5}{2}+2\times \frac{5}{2}}$$
$$\frac{-\frac{103}{40}}{\frac{5}{2}+2\times \frac{5}{2}}$$
$$\frac{-\frac{103}{40}}{\frac{5}{2}+5}$$
$$\frac{-\frac{103}{40}}{\frac{5}{2}+\frac{10}{2}}$$
$$\frac{-\frac{103}{40}}{\frac{5+10}{2}}$$
$$\frac{-\frac{103}{40}}{\frac{15}{2}}$$
$$-\frac{103}{40}\times \frac{2}{15}$$
$$\frac{-103\times 2}{40\times 15}$$
$$\frac{-206}{600}$$
$$-\frac{103}{300}$$
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$-\frac{103}{300} = -0.3433333333333333$
