A cylinder and a cone with the same base and height have a volume difference of 50 cubic decimeters, what is the sum of their volumes?
等底等高的圆柱和圆锥，它们的体积相差50立方分米，它们的体积和是多少立方分米．
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">50 / 2</gadget>
<output>25</output>

<gadget id="calculator">25 * 3</gadget>
<output>75</output>

<gadget id="calculator">25 + 75</gadget>
<output>100</output>

<result>100</result>