Two baskets of oranges are shipped from the fruit shop, and (2/7) of basket A is poured into basket B. The oranges in baskets A and B are the same weight. How much more are the oranges in basket A than in basket B?
水果店运来两筐橘子，将甲筐的(2/7)倒入乙筐，则甲、乙两筐橘子同样重，问甲筐的橘子的质量比乙筐多多少？
<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">1 - (2/7) - (2/7)</gadget>
<output>3/7 = around 0.428571</output>

<gadget id="calculator">1 - (3/7)</gadget>
<output>4/7 = around 0.571429</output>

<result>4/7 = around 0.571429</result>