Lulu measured the daily maximum temperature for a certain week in October. The average daily maximum temperature in the first 3 days is 17°C, and the sum of the maximum temperature in the next 4 days is 75°C. What is the average daily maximum temperature this week?
露露测量了10月某一星期每天的最高气温．其中前3天平均每天的最高气温是17℃，后4天最高气温的和是75℃．这周平均每天的最高气温是多少摄氏度？
<gadget id="calculator">17 * 3</gadget>
<output>51</output>

<gadget id="calculator">51 + 75</gadget>
<output>126</output>

<gadget id="calculator">3 + 4</gadget>
<output>7</output>

<gadget id="calculator">126 / 7</gadget>
<output>18</output>

<result>18</result>