There are 9,621 species of birds existing on the earth, and 769 species of birds that have died out are 10 times more than the number of existing birds. How many species of birds are there?
地球上现存的鸟类有9621种，已经消亡的鸟类比现存鸟类的10倍还多769种，已经消亡的鸟类有多少种？
<gadget id="calculator">9_621 * 10</gadget>
<output>96_210</output>

<gadget id="calculator">96_210 + 769</gadget>
<output>96_979</output>

<result>96_979</result>