The total length of the Beijing-Shanghai Expressway is about 1,200 kilometers. A bus and a small bus set off from Shanghai and Beijing at the same time respectively, head towards each other, and meet each other on the way after 6 hours. If the speed of the bus is that of a small bus (9/11), what is the speed of the bus in kilometers per hour?
京沪高速公路全长大约1200千米．一辆大客车和一辆小客车分别同时从上海和北京出发，相向而行，经过6小时在途中相遇．如果大客车的速度是小客车的(9/11)，大客车的速度是每小时多少千米？
<gadget id="calculator">1_200 / 6</gadget>
<output>200</output>

<gadget id="calculator">9 + 11</gadget>
<output>20</output>

<gadget id="calculator">9 / 20</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">200 * (9/20)</gadget>
<output>90</output>

<result>90</result>