The scale of a drawing of a machine part is 5:1, and the actual length of the part is 5mm. How long should the part be drawn on the drawing?
一幅机器零件图的比例尺是5：1，零件的实际长度是5毫米，在图上这个零件应该画多长多少
<gadget id="calculator">5 / 1</gadget>
<output>5</output>

<gadget id="calculator">5 / 10</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">5 * (1/2)</gadget>
<output>5/2 = around 2.5</output>

<result>5/2 = around 2.5</result>