$$\frac { ( \frac { 1 } { 3 } \div \frac { 1 } { 6 } ) - ( \frac { 4 } { 3 } \times \frac { 18 } { 15 } ) } { ( 1 \div 1 \frac { 1 } { 2 } ) + ( 1 \div 2 \frac { 1 } { 2 } ) }$$
$\frac{3}{8}=0.375$
$$\frac{\frac{1}{3}\times 6-\frac{4}{3}\times \frac{18}{15}}{\frac{1}{\frac{1\times 2+1}{2}}+\frac{1}{\frac{2\times 2+1}{2}}}$$
$$\frac{\frac{6}{3}-\frac{4}{3}\times \frac{18}{15}}{\frac{1}{\frac{1\times 2+1}{2}}+\frac{1}{\frac{2\times 2+1}{2}}}$$
$$\frac{2-\frac{4}{3}\times \frac{18}{15}}{\frac{1}{\frac{1\times 2+1}{2}}+\frac{1}{\frac{2\times 2+1}{2}}}$$
$$\frac{2-\frac{4}{3}\times \frac{6}{5}}{\frac{1}{\frac{1\times 2+1}{2}}+\frac{1}{\frac{2\times 2+1}{2}}}$$
$$\frac{2-\frac{4\times 6}{3\times 5}}{\frac{1}{\frac{1\times 2+1}{2}}+\frac{1}{\frac{2\times 2+1}{2}}}$$
$$\frac{2-\frac{24}{15}}{\frac{1}{\frac{1\times 2+1}{2}}+\frac{1}{\frac{2\times 2+1}{2}}}$$
$$\frac{2-\frac{8}{5}}{\frac{1}{\frac{1\times 2+1}{2}}+\frac{1}{\frac{2\times 2+1}{2}}}$$
$$\frac{\frac{10}{5}-\frac{8}{5}}{\frac{1}{\frac{1\times 2+1}{2}}+\frac{1}{\frac{2\times 2+1}{2}}}$$
$$\frac{\frac{10-8}{5}}{\frac{1}{\frac{1\times 2+1}{2}}+\frac{1}{\frac{2\times 2+1}{2}}}$$
$$\frac{\frac{2}{5}}{\frac{1}{\frac{1\times 2+1}{2}}+\frac{1}{\frac{2\times 2+1}{2}}}$$
$$\frac{\frac{2}{5}}{\frac{2}{1\times 2+1}+\frac{1}{\frac{2\times 2+1}{2}}}$$
$$\frac{\frac{2}{5}}{\frac{2}{2+1}+\frac{1}{\frac{2\times 2+1}{2}}}$$
$$\frac{\frac{2}{5}}{\frac{2}{3}+\frac{1}{\frac{2\times 2+1}{2}}}$$
$$\frac{\frac{2}{5}}{\frac{2}{3}+\frac{2}{2\times 2+1}}$$
$$\frac{\frac{2}{5}}{\frac{2}{3}+\frac{2}{4+1}}$$
$$\frac{\frac{2}{5}}{\frac{2}{3}+\frac{2}{5}}$$
$$\frac{\frac{2}{5}}{\frac{10}{15}+\frac{6}{15}}$$
$$\frac{\frac{2}{5}}{\frac{10+6}{15}}$$
$$\frac{\frac{2}{5}}{\frac{16}{15}}$$
$$\frac{2}{5}\times \frac{15}{16}$$
$$\frac{2\times 15}{5\times 16}$$
$$\frac{30}{80}$$
$$\frac{3}{8}$$
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$\frac{3}{2 ^ {3}} = 0.375$
