In the long history of the earth, 90,948 species of birds have died out, which is about 10.4 times that of the current birds. How many species of birds are there?
在地球漫长的历史上，已经有90948种鸟类消亡，大约是现在鸟类的10.4倍．现存鸟类多少种？
<gadget id="calculator">90_948 / 10.4</gadget>
<output>8_745</output>

<result>8_745</result>