piece of iron wire with a length of 48 cm is just made into a rectangular parallelepiped frame with a length of 5 cm and a width of 4 cm. What is its height?
一根长48厘米的铁丝正好做成了一个长5厘米、宽4厘米的长方体框架，它的高是多少．
<gadget id="calculator">48 / 4</gadget>
<output>12</output>

<gadget id="calculator">12 - 5 - 4</gadget>
<output>3</output>

<result>3</result>