cube with a side length of 5 cm can be assembled from 125 cubes with a side length of 1 cm. To make the side length of the assembled cube become 6 cm, how many cubes with a side length of 1 cm need to be added.
用125个棱长为1厘米的正方体可以拼成一个棱长为5厘米的正方体，要使拼成的正方体的棱长变为6厘米，则需要增加棱长为1厘米的正方体多少个．
<gadget id="calculator">6 / 1</gadget>
<output>6</output>

<gadget id="calculator">6 * 6 * 6 * 1 * 1</gadget>
<output>216</output>

<gadget id="calculator">216 - 125</gadget>
<output>91</output>

<result>91</result>