A part with a length of 5 mm is 10 cm long when drawn on the drawing. What is the scale of this drawing?
一种长5毫米的零件，画在图纸上长10厘米，这幅图的比例尺是多少
<gadget id="calculator">10 / 5</gadget>
<output>2</output>

<gadget id="calculator">10 * 2</gadget>
<output>20</output>

<result>20</result>