Xiao Ming goes to school by bicycle every day. The outer diameter of the bicycle tire is 70cm, and the bicycle wheel rotates 120 times per minute. It takes him 7 minutes to get to school. How far is Xiao Ming’s home from the school?
小明每天骑自行车上学，自行车轮胎的外直径是70cm，自行车轮每分钟转120圈，他要7分钟才能到校，求小明家离学校有多远？
<gadget id="calculator">70 / 100</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">3.14 * (7/10) * 120 * 7</gadget>
<output>1_846.32</output>

<result>1_846.32</result>