A section of road has 23 street lights from beginning to end, and every two street lights are 24 meters apart. How long is this section of road?
一段路，从头到尾有23盏路灯，每两盏路灯相距24米，这段路有多长？
<gadget id="calculator">23 - 1</gadget>
<output>22</output>

<gadget id="calculator">24 * 22</gadget>
<output>528</output>

<result>528</result>