The base of a triangle is 450 meters long and the height is 120 meters. What is the area of a parallelogram with the same base and height?
一块三角形地的底边长是450米，高是120米，与它等底等高的平行四边形地的面积是多少公顷．
<gadget id="calculator">120 / 2</gadget>
<output>60</output>

<gadget id="calculator">2 / 10_000</gadget>
<output>1/5_000 = around 0.0002</output>

<gadget id="calculator">450 * 60 * (1/5_000)</gadget>
<output>27/5 = around 5.4</output>

<result>27/5 = around 5.4</result>