In the long history of the earth, 90,998 species of birds have died out, 768 species more than 10 times the number of birds now. How many species of birds are there?
在地球漫长的历史上，已经有90998种鸟类消亡，比现在鸟类的10倍还多768种．现存鸟类多少种？
<gadget id="calculator">90_998 - 768</gadget>
<output>90_230</output>

<gadget id="calculator">90_230 / 10</gadget>
<output>9_023</output>

<result>9_023</result>