$${ 9 }^{ 2 } \div { 3 }^{ 4 } + { 4 }^{ 2 } + { 1 }^{ 0 }$$
$18$
$$\frac{81}{3^{4}}+4^{2}+1^{0}$$
$$\frac{81}{81}+4^{2}+1^{0}$$
$$1+4^{2}+1^{0}$$
$$1+16+1^{0}$$
$$17+1^{0}$$
$$17+1$$
$$18$$
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$2\times 3^{2}$
