Melt two cubes with surface areas of 216 and 384 square centimeters into a cuboid. It is known that the length of this cuboid is 13 cm and the width is 7 cm. Find its height.
将表面积分别是216和384平方厘米的两个正方体熔成一个长方体，已知这个长方体的长是13厘米，宽7厘米，求它的高．
<gadget id="calculator">6 ** 3</gadget>
<output>216</output>

<gadget id="calculator">8 ** 3</gadget>
<output>512</output>

<gadget id="calculator">216 + 512</gadget>
<output>728</output>

<gadget id="calculator">13 * 7</gadget>
<output>91</output>

<gadget id="calculator">728 / 91</gadget>
<output>8</output>

<result>8</result>