A manufacturer designs a precision part according to the scale of 50:1. If the distance on the picture is 25cm, what is the actual distance of this part in mm?
某制造厂按50：1的比例尺设计一种精密零件，如果图上距离为25cm，这个零件的实际离是多少mm．
<gadget id="calculator">50 / 1</gadget>
<output>50</output>

<gadget id="calculator">25 / 50</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(1/2) * 10</gadget>
<output>5</output>

<result>5</result>