Xiao Ming rides a bicycle across a bridge with a length of 816.4 meters. It is known that the diameter of the wheel is about 0.65 meters, and the wheel turns 80 times per minute on average. How long does it take for Xiao Ming to cross the bridge?
小明骑自行车通过一座长816.4米的大桥．已知车轮直径约是0.65米，车轮平均每分钟转80圈，求小明通过这座大桥需要多少分钟？
<gadget id="calculator">3.14 * 0.65</gadget>
<output>2.041</output>

<gadget id="calculator">2.041 * 80</gadget>
<output>163.28</output>

<gadget id="calculator">816.4 / 163.28</gadget>
<output>5</output>

<result>5</result>