There are lights and festoons on the pedestrian street, and a red lantern is hung every 4 meters from one end to the other. The pedestrian street has a total length of 600 meters. How many lanterns are hung in total?
步行街上张灯结彩，从这一头到那一头每隔4米挂着一个红灯笼．步行街全长有600米，一共挂了多少个灯笼？
<gadget id="calculator">600 / 4</gadget>
<output>150</output>

<gadget id="calculator">150 + 1</gadget>
<output>151</output>

<result>151</result>