The volume of a cylindrical bucket is 24 cubic decimeters, and the area of the inner bottom is 6 square decimeters, which is (1/4) full of water. How high is the water surface?
一个圆柱形水桶的容积是24立方分米，内底面积是6平方分米，差(1/4)就装满了水，水面多高？
<gadget id="calculator">1 / 4</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">(3/4) / 6</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">24 * (1/8)</gadget>
<output>3</output>

<result>3</result>