For the grain in the warehouse, the ratio of what was transported to what was left was 3:2. After another 200 kilograms were transported away, the weight ratio of what was transported to what was left in the warehouse was 2:1. How many kilograms of grain were there in the warehouse?
仓库里的粮食，运走的和剩下的比是3：2，又运走了200千克后，仓库里运走的和剩下的重量比是2：1，仓库里原来有多少千克粮食？
<gadget id="calculator">9 + 6</gadget>
<output>15</output>

<gadget id="calculator">200 * 15</gadget>
<output>3_000</output>

<result>3_000</result>