There are 10 people on each side of the lei team square in the sports meeting, how many people are there in the outermost layer?
运动会上的花环队方阵每边占10人，最外层一共有多少人．
<gadget id="calculator">10 * 4</gadget>
<output>40</output>

<gadget id="calculator">40 - 4</gadget>
<output>36</output>

<result>36</result>