The marketing department has provided the following possible demand information for $2$ years from now. What is the expected demand? Round your answer to the nearest whole number.

Demand Probability

$35,0000\mathrm{.}03$

$40,0000\mathrm{.}18$

$45,0000\mathrm{.}21$

$50,0000\mathrm{.}15$

$55,000=1-0\mathrm{.}03-0\mathrm{.}18-0\mathrm{.}21-0\mathrm{.}15$