On a picture with a scale of 25:1, the length of a part is measured to be 5 cm. What is the actual length of the part in centimeters?
在比例尺是25：1的图上，量得一个零件长5厘米，这个零件实际长多少厘米．
<gadget id="calculator">25 / 1</gadget>
<output>25</output>

<gadget id="calculator">5 / 25</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>