Zeng Guanglong can read a storybook in 12 days, while Luo Qiqi can finish it in 2 days longer than Zeng Guanglong. Zeng Guanglong can read 4 pages more than Luo Qiqi every day. How many pages does this storybook have?
一本故事书，曾广龙12天可以看完，而罗淇淇要比曾广龙多2天看完，曾广龙每天比罗淇淇多看4页．这本故事书有多少页．
<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">12 + 2</gadget>
<output>14</output>

<gadget id="calculator">1 / 14</gadget>
<output>1/14 = around 0.071429</output>

<gadget id="calculator">(1/12) - (1/14)</gadget>
<output>1/84 = around 0.011905</output>

<gadget id="calculator">4 / (1/84)</gadget>
<output>336</output>

<result>336</result>