Little Pony, Little Koizumi, and Little Ou each have some thumbtacks. The average number of thumbtacks of Xiao Ma and Xiao Xiaoquan is 5 more than the average number of three people; the average number of pushpins of Xiao Xiaoquan and Xiao Xiaoou is 2 less than the average number of three people. It is known that Xiao Xiaoquan has 52 thumbtacks, so how many pushpins does Xiao Xiaoou have?
小小马、小小泉、小小欧三人各有一些图钉．小小马、小小泉两人图钉的平均个数比三人的平均个数多5个；小小泉、小小欧两人图钉的平均个数比三人的平均个数少2个．已知小小泉有52个图钉，那么，小小欧有多少个图钉．
<gadget id="calculator">52 - 16</gadget>
<output>36</output>

<result>36</result>