A, B, and C have a total of 1800 kilograms of grain stored in the warehouse. When A transports 600 kilograms of his own grain, the ratio of A, B, and C’s grain storage is 1:3:4. How many kilograms of grain did A originally store? ?
甲、乙、丙三人在仓库里共存粮食1800千克，当甲将自己的粮食运走600千克之后，甲、乙、丙三人存粮的比是1：3：4，甲原来存多少千克粮食？
<gadget id="calculator">1_800 - 600</gadget>
<output>1_200</output>

<gadget id="calculator">1 + 3 + 4</gadget>
<output>8</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1_200 * (1/8)</gadget>
<output>150</output>

<gadget id="calculator">150 + 600</gadget>
<output>750</output>

<result>750</result>