A parallelogram and a triangle have the same base and height. If the sum of the areas of the parallelogram and the triangle is 45dm**2, what is the area of the parallelogram?
一个平行四边形与一个三角形等底等高，如果这个平行四边形和三角形面积的和是45dm**2，那么这个平行四边形的面积是多少
<gadget id="calculator">1 + 2</gadget>
<output>3</output>

<gadget id="calculator">45 / 3</gadget>
<output>15</output>

<gadget id="calculator">15 * 2</gadget>
<output>30</output>

<result>30</result>