In a wheat field, 4,500 kilograms of wheat will be harvested this year, which is 820 kilograms more than last year. How many kilograms of wheat will be harvested in two years?
一块麦地，今年收小麦4500千克，比去年多收820千克，两年共收小麦多少千克？
<gadget id="calculator">4_500 - 820</gadget>
<output>3_680</output>

<gadget id="calculator">3_680 + 4_500</gadget>
<output>8_180</output>

<result>8_180</result>