Xiaodong is reading a 300-page book, and he reads 25 pages a day. After reading for 3 days, what page should he start reading on the 4th day.
小东在看一本300页的书，他每天看25页，看了3天后，第4天应从第多少页看起．
<gadget id="calculator">25 * 3</gadget>
<output>75</output>

<gadget id="calculator">75 + 1</gadget>
<output>76</output>

<result>76</result>