When doing radio gymnastics, when the students of a certain grade stand in a solid square (square queue), there are 10 more people. If they stand in a solid square with one more person on each side, there are still 15 people missing. How many people are there?
做广播体操时，某年级的学生站成一个实心方阵时(正方形队列)还多10人，如果站成一个每边多1人的实心方阵，则还缺少15人，原来有多少人．
<gadget id="calculator">10 + 15 + 1</gadget>
<output>26</output>

<gadget id="calculator">26 / 2</gadget>
<output>13</output>

<gadget id="calculator">13 * 13</gadget>
<output>169</output>

<gadget id="calculator">169 - 15</gadget>
<output>154</output>

<result>154</result>