parallelogram-shaped vegetable field has a base of 12 meters and a height of 5 meters. The total harvest of vegetables is 1020 kg.
一块平行四边形的菜地，它的底是12米，高是5米，共收蔬菜1020千克，这块地平均每平方米收蔬菜多少千克？
<gadget id="calculator">12 * 5</gadget>
<output>60</output>

<gadget id="calculator">1_020 / 60</gadget>
<output>17</output>

<result>17</result>