A trapezoidal wheat field has an upper base of 65 meters, a lower base of 87 meters, and a height of 50 meters. If the wheat field yields 0.85 kilograms of wheat per square meter, how many kilograms of wheat can be harvested in this wheat field?
一块梯形麦田，上底是65米，下底是87米，高是50米，如果每平方米麦田收小麦0.85千克，这块麦田可收多少千克小麦？
<gadget id="calculator">65 + 87</gadget>
<output>152</output>

<gadget id="calculator">50 / 2</gadget>
<output>25</output>

<gadget id="calculator">152 * 25 * 0.85</gadget>
<output>3_230</output>

<result>3_230</result>