A set of interlocking gears, the large gear has 48 teeth, how many revolutions per minute, and the small gear has 16 teeth, how many revolutions per minute.
一组咬合的齿轮，大齿轮48个齿，每分钟转60周，小齿轮16个齿，每分钟转多少周．
<gadget id="calculator">48 * 60</gadget>
<output>2_880</output>

<gadget id="calculator">2_880 / 16</gadget>
<output>180</output>

<result>180</result>