Cut a cylinder into a largest cone. It is known that the volume cut off is 18.84 cubic centimeters, what is the volume of this cylinder in cubic centimeters?
把一个圆柱削成一个最大的圆锥．已知削去的体积是18.84立方厘米，这个圆柱的体积是多少立方厘米．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">18.84 / (2/3)</gadget>
<output>28.26</output>

<result>28.26</result>