city in the south has continuous torrential rains, and the city government has stored a batch of flood relief materials in warehouses A, B, and C. Warehouse A puts 1200 pieces, warehouse B puts the sum of warehouses A and C, and warehouse C puts half of the sum of warehouses A and B, so how many pieces of relief materials are there in total in warehouse C
南方某市连降暴雨，市政府在甲、乙、丙三个仓库存放一批抗洪救灾物资．甲仓库放了1200件，乙仓库放的是甲、丙两仓库的和，丙仓库放的是甲、乙两仓库和的一半，那么丙仓库中一共有救灾物资多少件
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 + 2</gadget>
<output>3</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/2) - (1/3)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1_200 / (1/6)</gadget>
<output>7_200</output>

<gadget id="calculator">7_200 * (1/3)</gadget>
<output>2_400</output>

<result>2_400</result>