A mobile phone part is 36mm long on a 12:1 drawing, what is the actual length of this part in mm?
一种手机零件在12：1的图纸上长36mm，这个零件的实际长度是多少mm．
<gadget id="calculator">12 / 1</gadget>
<output>12</output>

<gadget id="calculator">36 / 12</gadget>
<output>3</output>

<result>3</result>