The scale of a drawing of a mobile phone part is 5:1. The length of the part measured on the drawing is 25 mm. What is the actual length of the part in centimeters?
手机某个零件图纸的比例尺是5：1，在图纸上量得零件的长度是25毫米，这个零件的实际长度是多少厘米．
<gadget id="calculator">5 / 1</gadget>
<output>5</output>

<gadget id="calculator">25 / 5 / 10</gadget>
<output>1/2 = around 0.5</output>

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