A certain type of rice was planted in a right-angled triangle test field with two sides of 45 meters, and a total of 1518.75 kg of rice was harvested. According to this calculation, how many kilograms of rice can be harvested per hectare of this rice.
在一块两条直角边均为45米的直角三角形试验田中试种某种水稻，共收稻谷1518.75千克．按这样计算这种稻谷每公顷可收多少千克稻谷．
<gadget id="calculator">45 / 2 / 10_000</gadget>
<output>9/4_000 = around 0.00225</output>

<gadget id="calculator">45 * (9/4_000)</gadget>
<output>81/800 = around 0.10125</output>

<gadget id="calculator">1_518.75 / (81/800)</gadget>
<output>15_000</output>

<result>15_000</result>