If a cube with side length 5 cm is cut into smaller cubes with side length 1 cm, what is the sum of the surface areas of these small cubes?
把一个棱长为5厘米的正方体切成棱长为1厘米的小正方体，这些小正方体的表面积之和是多少平方厘米．
<gadget id="calculator">5 / 1</gadget>
<output>5</output>

<gadget id="calculator">1 * 1 * 6 * 5 * 5 * 5</gadget>
<output>750</output>

<result>750</result>