A parallelogram and a triangle have the same base and height, their areas differ by 12 square centimeters, what is the sum of their areas?
一个平行四边形和一个三角形等底等高，它们的面积相差12平方厘米，它们面积和是多少？
<gadget id="calculator">2 - 1</gadget>
<output>1</output>

<gadget id="calculator">12 / 1</gadget>
<output>12</output>

<gadget id="calculator">2 + 1</gadget>
<output>3</output>

<gadget id="calculator">12 * 3</gadget>
<output>36</output>

<result>36</result>