A circular part with a radius of 4mm is drawn on a drawing with a scale of 25:1. What is the radius in centimeters on the drawing?
一个半径长是4毫米的圆形零件，画在一幅比例尺是25：1的图纸上，它的图上半径是多少厘米？
<gadget id="calculator">25 / 1</gadget>
<output>25</output>

<gadget id="calculator">0.4 * 25</gadget>
<output>10</output>

<result>10</result>