Xiao Ming reads a book in a week. He reads an average of 35 pages per day in the first 3 days, and a total of 147 pages in the next 4 days. How many pages per day on average this week?
小明一星期看完一本书，前3天平均每天看35页，后4天共看147页，这一周平均每天看多少页？
<gadget id="calculator">35 * 3</gadget>
<output>105</output>

<gadget id="calculator">105 + 147</gadget>
<output>252</output>

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

<gadget id="calculator">252 / 7</gadget>
<output>36</output>

<result>36</result>