A bicycle tire has an outer diameter of 20 cm. It took Xiao Ming 10 minutes to ride this bicycle from home to school. If the wheels turn 200 times per minute, how many meters is the distance from home to school for Xiao Ming?
一种自行车轮胎的外直径是20厘米．小明骑这辆自行车从家到学校用了10分．如果车轮每分钟转200圈，小明从家到学校的路程是多少米？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">3.14 * (1/5) * 200 * 10</gadget>
<output>1_256</output>

<result>1_256</result>