A book has a total of 234 pages. I read 66 pages yesterday and 34 pages today. How many pages are left?
一本书一共有234页，昨天看了66页，今天又看了34页．还剩下多少页没看？
<gadget id="calculator">66 + 34</gadget>
<output>100</output>

<gadget id="calculator">234 - 100</gadget>
<output>134</output>

<result>134</result>