The volume of a cone is 30 cubic centimeters smaller than a cylinder with the same base and height, what is the volume of the cone in cubic centimeters
一个圆锥的体积比和它等底等高的圆柱小30立方厘米，这个圆锥的体积是多少立方厘米
<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">30 / (2/3)</gadget>
<output>45</output>

<gadget id="calculator">(1/3) * 45</gadget>
<output>15</output>

<result>15</result>