There is a group of butterflies on the grass, the flower butterflies account for 1/3 of the total number, and the rest are yellow butterflies, what percentage of the total number are yellow butterflies?
草地上有一群蝴蝶，花蝴蝶占总数的(1/3)，其余的是黄蝴蝶，黄蝴蝶占总数的几分之几？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<result>2/3 = around 0.666667</result>