Junjun has been reading a book for 5 days, 24 pages a day, and there are 15 pages left. How many pages does this book have in total?
军军看一本书，已经看了5天，每天看24页，还剩15页没看．这本书一共有多少页．
<gadget id="calculator">24 * 5</gadget>
<output>120</output>

<gadget id="calculator">120 + 15</gadget>
<output>135</output>

<result>135</result>