There is a cuboid whose height is 3cm, but its width remains the same. If the length decreases by 2cm, the volume decreases by 24cm**3. What is its width.
有一个长方体的高是3cm，它的宽不变，如果长减少了2cm，体积就跟着减少了24cm**3．它的宽是多少．
<gadget id="calculator">3 * 2</gadget>
<output>6</output>

<gadget id="calculator">24 / 6</gadget>
<output>4</output>

<result>4</result>