A precision part is 15 mm long, if it is drawn on a 12:1 part drawing, how many centimeters should it be drawn?
一种精密零件长15毫米，如果把它画在12：1的零件图上，应画多少厘米？
<gadget id="calculator">12 / 1</gadget>
<output>12</output>

<gadget id="calculator">1.5 * 12</gadget>
<output>18</output>

<result>18</result>