The volume of a cone is (2/7) cubic meters, what is the volume of a cylinder with the same base and height as it?
圆锥体积是(2/7)立方米，与它等底等高圆柱体体积是多少．
<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">(2/7) * 3</gadget>
<output>6/7 = around 0.857143</output>

<result>6/7 = around 0.857143</result>