book has a total of 300 pages. I read 10% of the book on the first day and the remaining 10% on the second day. How many pages should I start reading on the third day?
一本书共300页，第一天读了全书的10%，第二天读了余下的10%，第三天应从多少页读起．
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">300 * (1/10)</gadget>
<output>30</output>

<gadget id="calculator">300 - 30</gadget>
<output>270</output>

<gadget id="calculator">270 * (1/10)</gadget>
<output>27</output>

<gadget id="calculator">30 + 27 + 1</gadget>
<output>58</output>

<result>58</result>