A cuboid has a surface area of 220 square centimeters, a base area of 20 square centimeters, and a perimeter of 18 centimeters, what is its volume in cubic centimeters?
一个长方体，表面积是220平方厘米，底面积是20平方厘米，底面周长是18厘米，它的体积是多少立方厘米．
<gadget id="calculator">20 * 2</gadget>
<output>40</output>

<gadget id="calculator">220 - 40</gadget>
<output>180</output>

<gadget id="calculator">180 / 18</gadget>
<output>10</output>

<gadget id="calculator">20 * 10</gadget>
<output>200</output>

<result>200</result>