There are a total of 208 species of animals in a wild animal park, including 116 species of first- and second-level national protected animals, 54 species of first-level protected animals, and how many species of second-level protected animals? (solution by equation)
某野生动物园的动物共计208种，其中国家一、二级保护动物共有116种，一级保护动物有54种，二级保护动物有多少种？(用方程解)
<gadget id="calculator">116 - 54</gadget>
<output>62</output>

<result>62</result>