The perimeter of the floor of a rectangular activity room is 200 meters, and the ratio of its length to width is 3:2. To draw a plan on paper with a ratio of 1:200, how many centimeters should the width be drawn?
一个长方形活动室地面的周长是200米，它的长和宽的比是3：2，要按照1：200的比在纸上画出平面图，宽要画多少厘米
<gadget id="calculator">3 + 2</gadget>
<output>5</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(2/5) / 2</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 / 200</gadget>
<output>1/200 = around 0.005</output>

<gadget id="calculator">200 * (1/5) * 100 * (1/200)</gadget>
<output>20</output>

<result>20</result>