There are 22 birch species in my country, accounting for (11/20) of the birch species in the world. How many birch species are there in the world?
我国桦树种类有22种，占世界桦树种类的(11/20)，全世界有桦树多少种？
<gadget id="calculator">11 / 20</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">22 / (11/20)</gadget>
<output>40</output>

<result>40</result>