The scale of a bearing drawing is 4:1. If the length measured on the drawing is 34 mm, how many centimeters is it actually long?
一个轴承图的比例尺是4：1，如果图上量得长34毫米，实际长多少厘米？
<gadget id="calculator">4 / 1</gadget>
<output>4</output>

<gadget id="calculator">34 / 4 / 10</gadget>
<output>17/20 = around 0.85</output>

<result>17/20 = around 0.85</result>