Xiaoqiang reads a story book. He reads a total of 45 pages in the first 5 days, and reads an average of 12 pages a day in the next 10 days. He just finishes it. How many pages does Xiaoqiang read in average per day?
小强看一本故事书，前5天共看45页，后10天平均每天看12页，正好看完，小强看这本书平均每天看多少页？
<gadget id="calculator">12 * 10</gadget>
<output>120</output>

<gadget id="calculator">45 + 120</gadget>
<output>165</output>

<gadget id="calculator">5 + 10</gadget>
<output>15</output>

<gadget id="calculator">165 / 15</gadget>
<output>11</output>

<result>11</result>