$$\frac{ \frac{ (20+10)+70 }{ (50+20)+30 } +100+(20+80) }{ (20+20)+(30+30)+100 } =$$
$\frac{201}{200}=1.005$
$$\frac{\frac{30+70}{50+20+30}+100+20+80}{20+20+30+30+100}$$
$$\frac{\frac{100}{50+20+30}+100+20+80}{20+20+30+30+100}$$
$$\frac{\frac{100}{70+30}+100+20+80}{20+20+30+30+100}$$
$$\frac{\frac{100}{100}+100+20+80}{20+20+30+30+100}$$
$$\frac{1+100+20+80}{20+20+30+30+100}$$
$$\frac{101+20+80}{20+20+30+30+100}$$
$$\frac{121+80}{20+20+30+30+100}$$
$$\frac{201}{20+20+30+30+100}$$
$$\frac{201}{40+30+30+100}$$
$$\frac{201}{70+30+100}$$
$$\frac{201}{100+100}$$
$$\frac{201}{200}$$
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$\frac{3 \cdot 67}{2 ^ {3} \cdot 5 ^ {2}} = 1\frac{1}{200} = 1.005$
