A square, if its adjacent two sides are increased by 6 cm, a new square can be obtained, and the area of the new square is 120 cm2 larger than the original square. Find the area of the original square.
一个正方形，如果把它的相邻两边都增加6厘米，就可以得到一个新正方形，新正方形的面积比原正方形大120平方厘米．求原正方形的面积．
<gadget id="calculator">6 * 6</gadget>
<output>36</output>

<gadget id="calculator">120 - 36</gadget>
<output>84</output>

<gadget id="calculator">6 + 6</gadget>
<output>12</output>

<gadget id="calculator">84 / 12</gadget>
<output>7</output>

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

<result>49</result>