A precision part is 2mm long, how many centimeters should be drawn on the map with a scale of 50:1?
一个精密零件长2毫米，画在比例尺是50：1的图上，应画多少厘米？
<gadget id="calculator">50 / 1</gadget>
<output>50</output>

<gadget id="calculator">50 / 10</gadget>
<output>5</output>

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

<result>10</result>