There are 280 ducks in the farm, and there are more ducks than chickens (1/6). How many chickens are there in the farm?
饲养场养鸭280只，养的鸭比鸡多(1/6)，饲养场养鸡多少只？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 + (1/6)</gadget>
<output>7/6 = around 1.166667</output>

<gadget id="calculator">280 / (7/6)</gadget>
<output>240</output>

<result>240</result>