How many centimeters are left after a 100cm long iron wire is made into a cube frame with sides 7cm long?
一根长100厘米的铁丝，做一个棱长7厘米的正方体框架后，还剩下多少厘米
<gadget id="calculator">7 * 12</gadget>
<output>84</output>

<gadget id="calculator">100 - 84</gadget>
<output>16</output>

<result>16</result>