A trapezoidal paddy field has an upper base of 48 meters, a lower base of 62 meters, and a height of 20 meters. The total harvest of this field is 660 kilograms of wheat. How many kilograms of wheat are harvested on average per square meter?
一块梯形稻田，上底48米，下底62米，高20米，这块地共收小麦660千克，平均每平方米收小麦多少千克？
<gadget id="calculator">48 + 62</gadget>
<output>110</output>

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

<gadget id="calculator">110 * 10</gadget>
<output>1_100</output>

<gadget id="calculator">660 / 1_100</gadget>
<output>3/5 = around 0.6</output>

<result>3/5 = around 0.6</result>