A rectangular frame with a length of 8 cm and a width of 4 cm is stretched into a parallelogram, and the area is reduced by 8 cm2. Find the height of the parallelogram.
把一个长8厘米，宽4厘米的长方形框架拉成一个平行四边形，这时面积减少8平方厘米．求平行四边形的高．
<gadget id="calculator">8 * 4</gadget>
<output>32</output>

<gadget id="calculator">32 - 8</gadget>
<output>24</output>

<gadget id="calculator">24 / 8</gadget>
<output>3</output>

<result>3</result>