The gear ratio of the large gear to the small gear is 4:3. The large gear has 36 teeth, how many teeth does the small gear have?
大齿轮与小齿轮的齿数比是4：3．大齿轮有36个齿，小齿轮有多少个齿？
<gadget id="calculator">4 / 3</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">36 / (4/3)</gadget>
<output>27</output>

<result>27</result>