On a map with a scale of 1:4500000, it is measured that the length of the railway between A and B is about 32 centimeters. Taking a train from A to B at an average speed of 90 kilometers per hour, it takes about several rides hour train? (answer in your preferred way)
在一幅比例尺是1：4500000的地图上量得甲乙两地之间的铁路长约32厘米，从甲地到乙地乘坐火车，以平均每小时90千米的速度前进，大约要乘坐几个小时的火车？(用你喜欢的方法解答)
<gadget id="calculator">1 / 4_500_000</gadget>
<output>1/4_500_000 = around 0</output>

<gadget id="calculator">32 / (1/4_500_000) / 100_000 / 90</gadget>
<output>16</output>

<result>16</result>