The surface area of a cuboid is 210 square centimeters, which can be divided into three identical small cubes. What is the surface area of a small cube?
一个长方体的表面积是210平方厘米，刚好可以分成三个相同的小正方体，一个小正方体的表面积是多少平方厘米．
<gadget id="calculator">210 / 14</gadget>
<output>15</output>

<gadget id="calculator">15 * 6</gadget>
<output>90</output>

<result>90</result>