An English book has 12 more pages than a Chinese book, and 3 English books and 4 Chinese books have a total of 1275 pages. How many pages does an English book have.
一本英语书比一本语文书多12页，3本英语书和4本语文书共1275页．一本英语书有多少页．
<gadget id="calculator">12 * 4</gadget>
<output>48</output>

<gadget id="calculator">48 + 1_275</gadget>
<output>1_323</output>

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

<gadget id="calculator">1_323 / 7</gadget>
<output>189</output>

<result>189</result>