The distance between A and B is 264 kilometers. Xiao Li takes a bus from A to B. The speed of the bus is 80 km/h, and Xiao Zhang rides a motorcycle at 32 km/h. When the bus travels 200 km When I met Xiao Zhang on the motorcycle, how many hours did Xiao Li start before Xiao Zhang?
甲乙两地相距264千米，小李乘坐客车从甲地驶往乙地，客车速度是80千米/每小时，小张骑摩托车速度是32千米/小时，当客车行了200千米时与小张骑的摩托车相遇，求小李比小张提前几小时出发？
<gadget id="calculator">200 / 80</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">264 - 200</gadget>
<output>64</output>

<gadget id="calculator">64 / 32</gadget>
<output>2</output>

<gadget id="calculator">(5/2) - 2</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>