On a precision part drawing marked with a scale of 8:1, the measured part length is 40 mm, what is the actual length of the part.
在一张标有比例尺是8：1的精密零件图纸上，量得零件长是40毫米，这个零件实际长多少．
<gadget id="calculator">8 / 1</gadget>
<output>8</output>

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

<result>5</result>