There are about 320 species of terrestrial wild animals in my country, the species of second-level terrestrial protected animals are about 3/4 of terrestrial wild animals, and the types of first-level terrestrial protected animals are about 1 /3), please do the math, how many species of first-class terrestrial protected animals are there in my country?
我国陆栖野生动物约有320种，二级陆栖保护动物的种类约是陆栖野生动物的(3/4)，一级陆栖保护动物的种类约是二级陆栖保护动物的(1/3)，请你算一算，我国一级陆栖保护动物约有多少种？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">320 * (3/4) * (1/3)</gadget>
<output>80</output>

<result>80</result>