On a drawing of a machine part, the scale indicated on the picture is 12:1. If the length of the machine part on the picture is 6 cm, what is its actual length?
一张机器零件图上，图上标明比例尺是12：1，若在图上机器零件长6厘米，则其实际长度是多少？
<gadget id="calculator">12 / 1</gadget>
<output>12</output>

<gadget id="calculator">6 / 12</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>