The length of a machine part is 6 mm. On a drawing with a scale of 40:1, what is its length in cm? (Solve with ratio)
一个机器零件的长度是6毫米，在比例尺40：1的图纸上，它的长度是多少厘米？(用比例解)
<gadget id="calculator">40 * 6</gadget>
<output>240</output>

<gadget id="calculator">240 / 10</gadget>
<output>24</output>

<result>24</result>