There is a trapezoidal wheat field with an upper base of 225 meters, a lower base of 325 meters, and a height of 120 meters. The total harvested wheat is 20,295 kilograms. How many kilograms of wheat can be harvested per hectare on average in this field?
有一块梯形麦地，上底225米，下底325米，高120米，一共收小麦20295千克，问这块地平均每公顷收小麦多少千克？
<gadget id="calculator">225 + 325</gadget>
<output>550</output>

<gadget id="calculator">120 / 2 / 10_000</gadget>
<output>3/500 = around 0.006</output>

<gadget id="calculator">550 * (3/500)</gadget>
<output>33/10 = around 3.3</output>

<gadget id="calculator">20_295 / (33/10)</gadget>
<output>6_150</output>

<result>6_150</result>