A rectangular parallelepiped frame with a length of 8 cm, a width of 5 cm, and a height of cm is surrounded by 60 cm long wire.
用60厘米长的铁丝围一个长方体框架，长8厘米、宽5厘米、高多少厘米．
<gadget id="calculator">60 / 4</gadget>
<output>15</output>

<gadget id="calculator">8 + 5</gadget>
<output>13</output>

<gadget id="calculator">15 - 13</gadget>
<output>2</output>

<result>2</result>