During the Wenchuan Earthquake Relief, Dr. Huang, a volunteer, worked an average of 18 hours a day in the first two days, and a total of 83 hours a day in the next five days. How many hours did Dr. Huang work on average this week?
在汶川抗震救灾的日子里，志愿者黄医生前2天平均每天工作18小时，后5天一共工作了83小时，这一周，黄医生平均每天工作多少小时？
<gadget id="calculator">18 * 2</gadget>
<output>36</output>

<gadget id="calculator">36 + 83</gadget>
<output>119</output>

<gadget id="calculator">2 + 5</gadget>
<output>7</output>

<gadget id="calculator">119 / 7</gadget>
<output>17</output>

<result>17</result>