On a drawing of a precision part (the scale is 5:1), the measured part is 40 mm long. What is the actual length of this part in mm?
在一张精密零件图纸上(比例尺为5：1)，量得零件长40毫米，这种零件的实际长度是多少毫米．
<gadget id="calculator">5 / 1</gadget>
<output>5</output>

<gadget id="calculator">40 / 5</gadget>
<output>8</output>

<result>8</result>