A parallelogram field harvests 3400kg of rapeseed, its base is 250m long and its height is 68m. How many kilograms of rapeseed are harvested on average per hectare?
一块平行四边形的地共收油菜籽3400kg，它的底长250m，高68m．平均每公顷收油菜籽多少kg？
<gadget id="calculator">68 / 10_000</gadget>
<output>17/2_500 = around 0.0068</output>

<gadget id="calculator">400 * (17/2_500)</gadget>
<output>68/25 = around 2.72</output>

<gadget id="calculator">3_400 / (68/25)</gadget>
<output>1_250</output>

<result>1_250</result>