Xiao Ming reads a book and reads 47 pages on the first day, 5 pages less on the second day than on the first day, and 49 pages on the third day. How many pages does she read on average every day?
小明看一本书，第一天看了47页，第二天比第一天少看了5页，第三天看了49页，她平均每天看多少页？
<gadget id="calculator">47 - 5</gadget>
<output>42</output>

<gadget id="calculator">47 + 42 + 49</gadget>
<output>138</output>

<gadget id="calculator">138 / 3</gadget>
<output>46</output>

<result>46</result>