A roughly rectangular wheat field is 400 meters long and 300 meters wide. If the average yield of wheat per hectare is 6.4 tons, how many tons of wheat can be produced in this wheat field?
一块近似长方形的麦田，长400米，宽300米，如果平均每公顷产小麦6.4吨，那么这片麦田大约共产小麦多少吨？
<gadget id="calculator">300 / 10_000</gadget>
<output>3/100 = around 0.03</output>

<gadget id="calculator">400 * (3/100) * 6.4</gadget>
<output>76.8</output>

<result>76.8</result>