On one side of a certain road, the distance between every two adjacent lamp posts is 150 meters. How many meters did Xiao Liang walk from the first lamp post to the fifth lamp post?
某道路一侧，每相邻两根灯柱之间的距离是150米，小亮从第一根灯柱走到第五根灯柱，他一共走了多少米？
<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">150 * 4</gadget>
<output>600</output>

<result>600</result>