A farm raises 270 chickens, the number of ducks (9/7), the number of ducks is the number of geese (6/7), how many geese?
某饲养场养了270只鸡，是鸭只数的(9/7)，养鸭的只数是鹅的只数的(6/7)，养鹅多少只？
<gadget id="calculator">9 / 7</gadget>
<output>9/7 = around 1.285714</output>

<gadget id="calculator">6 / 7</gadget>
<output>6/7 = around 0.857143</output>

<gadget id="calculator">270 / (9/7) / (6/7)</gadget>
<output>245</output>

<result>245</result>