Use an 80 cm long iron wire to make a cuboid with a length of 8 cm, a width of 6 cm, and a height of 4 cm. How many centimeters are left?
用一根长80厘米的铁丝，做成一个长8厘米，宽6厘米，高4厘米的长方体后，还剩下多少厘米．
<gadget id="calculator">8 + 4 + 6</gadget>
<output>18</output>

<gadget id="calculator">18 * 4</gadget>
<output>72</output>

<gadget id="calculator">80 - 72</gadget>
<output>8</output>

<result>8</result>