A square with a side length of 5 meters, if the side length is increased by 2 meters, how many square meters will its area increase?
一个边长5米的正方形，如果边长增加2米，它的面积增加多少平方米？
<gadget id="calculator">5 + 2</gadget>
<output>7</output>

<gadget id="calculator">7 * 7</gadget>
<output>49</output>

<gadget id="calculator">5 * 5</gadget>
<output>25</output>

<gadget id="calculator">49 - 25</gadget>
<output>24</output>

<result>24</result>