The area of a parallelogram lawn is 2800 square meters, the known height is 40 meters, and the bottom is how many meters.
一块平行四边形草坪的面积是2800平方米，已知高是40米，底是多少米．
<gadget id="calculator">2_800 / 40</gadget>
<output>70</output>

<result>70</result>