The volume of the cone is (3/4) cubic decimeter, the area of the base is (2/5) square decimeter, what is its height.
圆锥体的体积是(3/4)立方分米，底面积是(2/5)平方分米，它的高是多少．
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(3/4) / (1/3) / (2/5)</gadget>
<output>45/8 = around 5.625</output>

<result>45/8 = around 5.625</result>