A book has 500 pages in total. You read 10% of the book on the first day, and the remaining 10% on the second day. How many pages should you start reading on the third day?
一本书共500页，第一天读了全书的10%，第二天读了余下的10%，第三天应从第多少页读起．
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">500 * (1/10)</gadget>
<output>50</output>

<gadget id="calculator">500 - 50</gadget>
<output>450</output>

<gadget id="calculator">450 * (1/10)</gadget>
<output>45</output>

<gadget id="calculator">50 + 45 + 1</gadget>
<output>96</output>

<result>96</result>