$${ 2 }^{ 3 } \times { 5 }^{ 2 } \div 5+10- { 2 }^{ 2 } \div 4$$
$49$
$$\frac{8\times 5^{2}}{5}+10-\frac{2^{2}}{4}$$
$$\frac{8\times 25}{5}+10-\frac{2^{2}}{4}$$
$$\frac{200}{5}+10-\frac{2^{2}}{4}$$
$$40+10-\frac{2^{2}}{4}$$
$$50-\frac{2^{2}}{4}$$
$$50-\frac{4}{4}$$
$$50-1$$
$$49$$
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$7^{2}$
