A parallelogram test field is 25 meters high and 15 meters shorter than the bottom side. A total of 980 kg of rice is harvested in this test field. How many kilograms of rice is harvested on average per square meter of experimental field?
一块平行四边形试验田，高25米，高比底边短15米，在这块试验田里共收稻谷980千克．平均每平米试验田收稻谷多少千克？
<gadget id="calculator">25 + 15</gadget>
<output>40</output>

<gadget id="calculator">40 * 25</gadget>
<output>1_000</output>

<gadget id="calculator">980 / 1_000</gadget>
<output>49/50 = around 0.98</output>

<result>49/50 = around 0.98</result>