A rice field on a certain farm is 500 meters long and 300 meters wide, and the rice harvested per hectare is 9000 kilograms. How many tons of rice are harvested in this rice field?
某农场一稻田长500米，宽300米，每公顷收稻谷9000千克，这块稻田共收稻谷多少吨？
<gadget id="calculator">300 / 10_000</gadget>
<output>3/100 = around 0.03</output>

<gadget id="calculator">9_000 / 1_000</gadget>
<output>9</output>

<gadget id="calculator">500 * (3/100) * 9</gadget>
<output>135</output>

<result>135</result>