Xiao Ming's home is 6,280 meters away from the school. He rides a bicycle home every day. The tire diameter of the bicycle is 80 cm. If the bicycle rotates 50 times per minute, how long will it take for Xiao Ming to get home?
小明家离学校有6280米，他每天骑自行车回家，自行车的轮胎直径是80厘米，如果自行车每分钟转50圈，小明多长时间可以到家？
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">3.14 * (4/5) * 50</gadget>
<output>125.6</output>

<gadget id="calculator">6_280 / 125.6</gadget>
<output>50</output>

<result>50</result>