The length of a precision part is 5mm, if it is drawn in a plane with a scale of 8:1, how many centimeters should it be drawn?
一个精密零件的长是5毫米，把它画在一个比例尺是8：1的平面图中，应该画多少厘米？
<gadget id="calculator">8 / 1</gadget>
<output>8</output>

<gadget id="calculator">8 / 10</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">5 * (4/5)</gadget>
<output>4</output>

<result>4</result>