The length of a miniature part is 5 mm, and it is drawn on the drawing at a ratio of 80:1. What is the length in centimeters on the drawing?
一种微型零件的长5毫米，按80：1的比例画在图纸上，在图纸上得长度是多少厘米．
<gadget id="calculator">80 / 1</gadget>
<output>80</output>

<gadget id="calculator">0.5 * 80</gadget>
<output>40</output>

<result>40</result>