The base of a parallelogram is 24 meters long and the height is 25% less than the base. How many meters is the height?
一块平行四边形菜地底边长24米，高比底边少25%，高是多少米？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">24 * (3/4)</gadget>
<output>18</output>

<result>18</result>