An iron wire 80 cm long can be welded into a cuboid with a length of 9 cm, a width of 5 cm, and a height of several centimeters.
一根长80厘米的铁丝，最大可以焊接成一个长9厘米、宽5厘米、高多少厘米的长方体．
<gadget id="calculator">80 / 4</gadget>
<output>20</output>

<gadget id="calculator">9 + 5</gadget>
<output>14</output>

<gadget id="calculator">20 - 14</gadget>
<output>6</output>

<result>6</result>