The chicken farm raised 23,000 chickens this year. After selling 7,000 chickens, it was 3,000 more than last year. How many chickens did the chicken farm raise last year?
养鸡场今年养鸡2.3万只，卖掉0.7万只后，还比去年多0.3万只，养鸡场去年养鸡多少只？
<gadget id="calculator">2.3 - 0.7 - 0.3</gadget>
<output>1.3</output>

<result>1.3</result>