A 60 cm long iron wire can be welded into a cuboid with a length of 5 cm, a width of 3 cm and a height of cm.
用一根长60厘米的铁丝，能焊接成一个长5厘米，宽3厘米，高多少厘米的长方体．
<gadget id="calculator">60 / 4</gadget>
<output>15</output>

<gadget id="calculator">5 + 3</gadget>
<output>8</output>

<gadget id="calculator">15 - 8</gadget>
<output>7</output>

<result>7</result>