The gear ratio of the small gear to the large gear is 3:4. The small gear has 27 teeth, how many teeth does the large gear have?
小齿轮与大齿轮的齿数比是3：4．小齿轮有27个齿，大齿轮有几个齿？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

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

<result>36</result>