Write one or more commands to evaluate the following mathematical expression and assign the result to the indicated variable name.

$y=\frac{15\mathrm{.}5lo{g}_{10}(1234\mathrm{.}56-{8\mathrm{.}5}^{3\mathrm{.}1})}{5\mathrm{.}23+3\mathrm{.}7cos(4\mathrm{.}2+\frac{}{3})}$

Assign the result for $y$ to the variable Answer$1.$