Xiao Ming's home is 2198 meters away from the school. He rides a bicycle home every day. The outer diameter of the bicycle tire is 70 cm. If the bicycle turns 100 times per minute, how long will it take for Xiao Ming to get home?
小明家离学校有2198米，他每天骑自行车回家，自行车的轮胎外直径是70厘米，如果自行车每分钟转100圈，小明多长时间可以到家？
<gadget id="calculator">70 / 100</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">3.14 * (7/10) * 100</gadget>
<output>219.8</output>

<gadget id="calculator">2_198 / 219.8</gadget>
<output>10</output>

<result>10</result>