The ratio of corn to soybeans in a grain depot is 5:3. If 2,800 kilograms of corn are replaced with soybeans, the ratio of corn to soybeans is 1:2. How many kilograms of grain are there in total?
一个粮库的中存粮中玉米和大豆的比是5：3，如果把2800千克玉米换成大豆，玉米和大豆的比是1：2，求一共有粮食多少千克？
<gadget id="calculator">3 + 5</gadget>
<output>8</output>

<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</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">(5/8) - (1/3)</gadget>
<output>7/24 = around 0.291667</output>

<gadget id="calculator">2_800 / (7/24)</gadget>
<output>9_600</output>

<result>9_600</result>