Three people, A, B, and C, paid the same amount of money to jointly buy a batch of saplings. When distributing the saplings, A took 1100 more than C, and B took 700 more than C. When clearing the account, A gives C 1,800 yuan, how much should B refund to C.
甲乙丙3人出同样多的钱合买一批树苗，在分树苗时，甲比丙多拿了1100棵，乙比丙多拿了700棵．清帐时，甲给丙1800元，乙应退丙多少元．
<gadget id="calculator">1_800 / 3</gadget>
<output>600</output>

<gadget id="calculator">1_100 - 600</gadget>
<output>500</output>

<gadget id="calculator">1_800 / 500</gadget>
<output>18/5 = around 3.6</output>

<gadget id="calculator">700 - 600</gadget>
<output>100</output>

<gadget id="calculator">(18/5) * 100</gadget>
<output>360</output>

<result>360</result>