There are 1200 chickens in the farm, which is 300 less than three times the number of ducks. How many chickens and ducks are there in the farm?
饲养场有鸡1200只，比鸭的只数的3倍少300只，饲养场共有鸡和鸭多少只？
<gadget id="calculator">1_200 + 300</gadget>
<output>1_500</output>

<gadget id="calculator">1_500 / 3</gadget>
<output>500</output>

<gadget id="calculator">500 + 1_200</gadget>
<output>1_700</output>

<result>1_700</result>