The traffic police department has installed traffic lights at the crossroads to implement traffic management. The following data is the data of motor vehicles passing in the north and south directions of a crossroad in ten identical time periods (that is, the duration of each traffic light being on once, and the interval between red and green lights is 40 seconds): 15, 22, 15, 16, 18, 15, 19, 21, 15, 14. From this, it can be estimated how many motor vehicles pass through the intersection in the north-south direction within 1 hour.
交警部门在十字路口装了红绿灯实行交通管理，以下数据是某十字路口在十个相同时间段(即红绿灯各亮一次的持续时间，红、绿灯间隔40秒)内南北方向机动车辆通过的数据：15，22，15，16，18，15，19，21，15，14．由此可估计1小时内南北方向通过该路口的机动车有多少辆．
<gadget id="calculator">3_600 / 40 / 2</gadget>
<output>45</output>

<gadget id="calculator">15 + 22 + 15 + 16 + 18 + 15 + 19 + 21 + 15 + 14</gadget>
<output>170</output>

<gadget id="calculator">170 / 10</gadget>
<output>17</output>

<gadget id="calculator">45 * 17</gadget>
<output>765</output>

<result>765</result>