A triangle and a parallelogram have the same base and height. It is known that the sum of their areas is 60 square meters. What is the area of the parallelogram in square meters?
一个三角形与一个平行四边形等底等高，已知它们的面积之和是60平方米，那么平行四边形的面积是多少平方米．
<gadget id="calculator">1 + 2</gadget>
<output>3</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">60 * (2/3)</gadget>
<output>40</output>

<result>40</result>