A story book has already read 90 pages, and the remaining pages are read 27 pages a day for 5 days. How many pages does this storybook have?
一本故事书已经看了90页，剩下的每天看27页，还要看5天．这本故事书一共有几页？
<gadget id="calculator">27 * 5</gadget>
<output>135</output>

<gadget id="calculator">135 + 90</gadget>
<output>225</output>

<result>225</result>