The temperature at 2:00, 8:00, 14:00, and 20:00 on June 1 in our city is 13°C, 18°C, 24°C, and 17°C, respectively. What is the average temperature in our city on this day?
六月一日我市2点、8点、14点、20点四个时刻的温度分别是13℃、18℃、24℃、17℃．这一天我市的平均温度是多少℃
<gadget id="calculator">13 + 18 + 24 + 17</gadget>
<output>72</output>

<gadget id="calculator">72 / 4</gadget>
<output>18</output>

<result>18</result>