The ratio of the weight of goods stored in two warehouses, A and B, is 4:3, and one-third of the goods in warehouse A are transported to warehouse B. At this time, the weight of goods in warehouse B is 100 tons more than that in warehouse A. The original goods in warehouse A are How many tons.
甲有、乙两个仓库存放货物重量的比是4：3，把甲仓库货物的三分之一运到乙仓库，这时乙仓库货物重量比甲仓库多100吨，甲仓库原有货物为多少吨．
<gadget id="calculator">4 + 3</gadget>
<output>7</output>

<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

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

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(4/7) * (2/3)</gadget>
<output>8/21 = around 0.380952</output>

<gadget id="calculator">1 - (8/21) - (8/21)</gadget>
<output>5/21 = around 0.238095</output>

<gadget id="calculator">100 / (5/21)</gadget>
<output>420</output>

<gadget id="calculator">420 * (4/7)</gadget>
<output>240</output>

<result>240</result>