It takes Xiao Ming 12 days to read a storybook, 18 pages a day for the first 5 days, and 105 pages for the next 7 days. How many pages does this book have?
一本故事书小明要12天看完，前5天每天看18页，后7天共看105页．这本书共有多少页？
<gadget id="calculator">18 * 5</gadget>
<output>90</output>

<gadget id="calculator">90 + 105</gadget>
<output>195</output>

<result>195</result>