A 96 cm long iron wire is used to form a parallelogram, one side is 18 cm long, and the length of the other side is 18 cm.
用一根96厘米长的铁丝围成一个平行四边形，其中一条边是18厘米，另一条边长多少厘米．
<gadget id="calculator">96 / 2</gadget>
<output>48</output>

<gadget id="calculator">48 - 18</gadget>
<output>30</output>

<result>30</result>