cylinder and a cone have the same base area and height, and their volumes differ by 40 cubic decimeters. What is the volume of the cylinder?
一个圆柱和一个圆锥的底面积和高都相等，它们的体积相差40立方分米，圆柱的体积是多少立方分米．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">40 / (2/3)</gadget>
<output>60</output>

<result>60</result>