A trapezoidal wheat field is 42 meters long at the top, 58 meters long at the bottom, and 20 meters high. This field harvests a total of 7,560 kilograms of wheat. How many kilograms of wheat are produced on average per square meter?
一块梯形麦地上底长42米，下底长58米，高20米，这块地共收小麦7560千克，平均每平方米产小麦多少千克？
<gadget id="calculator">42 + 58</gadget>
<output>100</output>

<gadget id="calculator">20 / 2</gadget>
<output>10</output>

<gadget id="calculator">100 * 10</gadget>
<output>1_000</output>

<gadget id="calculator">7_560 / 1_000</gadget>
<output>189/25 = around 7.56</output>

<result>189/25 = around 7.56</result>