Cut a cylinder into the largest cone, the cut part is 6kg, how much does the cone weigh?
把一个圆柱削成最大的圆锥，削掉部分是6㎏，这个圆锥重多少．
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<result>3</result>