There is a group of butterflies on the grass, white butterflies account for 2/7 of the total, and the rest are flower butterflies. What percentage of the total number of flowers and butterflies?
草地上有一群蝴蝶，白蝴蝶占总数的(2/7)，剩下的是花蝴蝶．花蝴蝶占总数的几分之几？
<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">1 - (2/7)</gadget>
<output>5/7 = around 0.714286</output>

<result>5/7 = around 0.714286</result>