A rectangular wheat field is 600 meters long and 150 meters wide. On average, 9 tons of wheat can be harvested per hectare. How many tons of wheat can be harvested in total?
一块长方形麦地长600米，宽150米，平均每公顷收小麦9吨，一共可以收小麦多少吨？
<gadget id="calculator">150 / 10_000</gadget>
<output>3/200 = around 0.015</output>

<gadget id="calculator">600 * (3/200) * 600 * (3/200)</gadget>
<output>81</output>

<result>81</result>