If a cylinder is cut into the largest cone and 40cm**3 is cut off, what is the volume of the original cylinder?
把一个圆柱削成一个最大的圆锥，削去了40cm**3，原来圆柱的体积是多少．
<gadget id="calculator">3 / 1</gadget>
<output>3</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

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

<result>60</result>