There are 2,800 tons of rice in the warehouse, and they are transported away (1/7) on the first day and (3/5) on the second day. How many tons more are transported on the second day than on the first day?
仓库有大米2800吨，第一天运走(1/7)，第二天运走(3/5)，第二天比第一天多运多少吨？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">(3/5) - (1/7)</gadget>
<output>16/35 = around 0.457143</output>

<gadget id="calculator">2_800 * (16/35)</gadget>
<output>1_280</output>

<result>1_280</result>