The base of a triangle is 12dm, the height is 5dm, what is the area of a parallelogram with the same base and height as dm**2.
一个三角形的底是12dm，高是5dm，与它等底等高的平行四边形的面积是多少dm**2．
<gadget id="calculator">5 / 2</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">12 * (5/2) * 2</gadget>
<output>60</output>

<result>60</result>