The volume of a cylindrical bucket is 72 cubic decimeters, and the area of the bottom of the bucket is 12 square decimeters. There is (3/4) bucket of water inside, how many decimeters is the water surface high?
一个圆柱形水桶的容积是72立方分米，桶底的面积是12平方分米．里面装了(3/4)桶水，水面高多少分米？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(3/4) / 12</gadget>
<output>1/16 = around 0.0625</output>

<gadget id="calculator">72 * (1/16)</gadget>
<output>9/2 = around 4.5</output>

<result>9/2 = around 4.5</result>