A piece of parallelogram-shaped cultivated land is 45 meters long at the base and three times as high as the height. What is the area of the cultivated land?
一块平行四边形的耕地，底长45米，是高的3倍，这块耕地面积是多少．
<gadget id="calculator">45 / 3</gadget>
<output>15</output>

<gadget id="calculator">45 * 15</gadget>
<output>675</output>

<result>675</result>