The farm has a rectangular test field with a length of 200 meters and a width of 150 meters. The average yield of rice per hectare is 13.8 tons. How many tons of rice does this test field produce in total?
农场有一块长200米，宽150米的长方形试验田，平均每公顷产稻谷13.8吨，这块试验田一共产稻谷多少吨？
<gadget id="calculator">150 / 10_000</gadget>
<output>3/200 = around 0.015</output>

<gadget id="calculator">200 * (3/200) * 13.8</gadget>
<output>41.4</output>

<result>41.4</result>