$$\frac { 4.4 \times 10 ^ { 5 } + 5.6 \times 10 ^ { 5 } } { 5 \times 10 ^ { 6 } }$$
$0.2$
$$\frac{4.4\times 100000+5.6\times 10^{5}}{5\times 10^{6}}$$
$$\frac{440000+5.6\times 10^{5}}{5\times 10^{6}}$$
$$\frac{440000+5.6\times 100000}{5\times 10^{6}}$$
$$\frac{440000+560000}{5\times 10^{6}}$$
$$\frac{1000000}{5\times 10^{6}}$$
$$\frac{1000000}{5\times 1000000}$$
$$\frac{1000000}{5000000}$$
$$\frac{1}{5}$$
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$\frac{1}{5} = 0.2$
