If the side length of a cube is 5 cm, and its side length is enlarged to 3 times, what is the surface area of the cube now?
一个正方体的棱长是5厘米，把它的棱长扩大到原来的3倍，现在这个正方体的表面积是多少厘米．
<gadget id="calculator">5 * 5 * 6</gadget>
<output>150</output>

<gadget id="calculator">3 * 3</gadget>
<output>9</output>

<gadget id="calculator">150 * 9</gadget>
<output>1_350</output>

<result>1_350</result>