A story book has 3 pages of illustrations between 2 pages of text; if the book has 99 pages and the first page is text, how many pages of illustrations does the book have?
一本故事书，每2页文字之间有3页插图；如果这本书有99页，且第一页是文字，那么这本书共有多少页插图？
<gadget id="calculator">24 * 3</gadget>
<output>72</output>

<gadget id="calculator">72 + 2</gadget>
<output>74</output>

<result>74</result>