The school has a rectangular flower garden with an area of 128 square meters, 32 meters long, and how many meters less the width than the length.
学校有一块面积是128平方米的长方形花圃，长32米，宽比长少多少米．
<gadget id="calculator">128 / 32</gadget>
<output>4</output>

<gadget id="calculator">32 - 4</gadget>
<output>28</output>

<result>28</result>