The base of the triangle is 1.8 meters and the height is 1.5 meters. What is the area of the parallelogram formed by two identical triangles?
三角形的底是1.8米，高是1.5米，这样两个完全相同的三角形拼成的平行四边形的面积是多少平方米．
<gadget id="calculator">1.5 / 2</gadget>
<output>0.75</output>

<gadget id="calculator">1.8 * 0.75 * 2</gadget>
<output>2.7</output>

<result>2.7</result>