On the drawing with a scale of 10:1, the length of the part on the drawing is measured to be 20 cm. What is the actual length of the part in centimeters?
在比例尺是10：1的图纸上，量得图上零件的长是20厘米，零件的实际长度是多少厘米．
<gadget id="calculator">10 / 1</gadget>
<output>10</output>

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

<result>2</result>