The farmer applies chemical fertilizers to the rice fields, 425 kg per hectare. In a rectangular paddy field 200 meters long and 150 meters wide, how many kilograms of fertilizer should be applied?
农民给水稻田施化肥，每公顷施肥425千克．在一个长200米，宽150米的长方形稻田里，要施肥多少千克？
<gadget id="calculator">1 * 10_000</gadget>
<output>10_000</output>

<gadget id="calculator">150 / 10_000</gadget>
<output>3/200 = around 0.015</output>

<gadget id="calculator">425 * 200 * (3/200)</gadget>
<output>1_275</output>

<result>1_275</result>