Xiaojuan read a 188-page story book, and read an average of 17 pages a day in the first 4 days. After reading the remaining 6 days, how many pages do you read on average per day?
小娟看一本188页的故事书，前4天平均每天看17页．剩下的6天看完，平均每天看多少页？
<gadget id="calculator">17 * 4</gadget>
<output>68</output>

<gadget id="calculator">188 - 68</gadget>
<output>120</output>

<gadget id="calculator">120 / 6</gadget>
<output>20</output>

<result>20</result>