There is 40 square meters of corn field in the school's biological garden. Cabbage is grown in corn (4/5), and cucumbers are grown in cabbage (3/4). How many square meters are grown in cucumbers?
学校生物园里有玉米地40平方米，种白菜是玉米的面积的(4/5)，种青瓜又是种白菜的(3/4)，种青瓜多少平方米？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">40 * (4/5) * (3/4)</gadget>
<output>24</output>

<result>24</result>