In the group gymnastics performance, the young pioneers lined up in a hollow phalanx with 4 layers. The outermost layer has 10 people on each side. How many young pioneers participated in the group gymnastics performance?
团体操表演，少先队员排成4层的中空方阵，最外层每边人数是10人，问参加团体操表演的少先队员共有多少人？
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">9 * 4</gadget>
<output>36</output>

<gadget id="calculator">8 - 1</gadget>
<output>7</output>

<gadget id="calculator">7 * 4</gadget>
<output>28</output>

<gadget id="calculator">6 - 1</gadget>
<output>5</output>

<gadget id="calculator">5 * 4</gadget>
<output>20</output>

<gadget id="calculator">4 - 1</gadget>
<output>3</output>

<gadget id="calculator">3 * 4</gadget>
<output>12</output>

<gadget id="calculator">36 + 28 + 20 + 12</gadget>
<output>96</output>

<result>96</result>