Xiao Ming reads a 340-page story book. He reads 92 pages on the first day, 108 pages on the second day, and finishes the rest on the third day. How many pages did he read on the third day? (solution in two ways)
小明读一本340页的故事书，第一天读92页，第二天读了108页，剩下的第三天读完，第三天读了多少页？(用两种方法解)
<gadget id="calculator">92 + 108</gadget>
<output>200</output>

<gadget id="calculator">340 - 200</gadget>
<output>140</output>

<result>140</result>