If a precision part is drawn on a drawing with a scale of 12:1, its length is 3.6 cm. How many millimeters is the actual length of this part?
一种精密零件把它画在比例尺是12：1图纸上量得长3.6厘米，这个零件实际长多少毫米．
<gadget id="calculator">12 / 1</gadget>
<output>12</output>

<gadget id="calculator">3.6 / 12</gadget>
<output>0.3</output>

<gadget id="calculator">0.3 * 10</gadget>
<output>3</output>

<result>3</result>