The ratio of the number of pages read to the number of unread pages in a story book is 2:3, the following statement is wrong is how much less the number of read pages than the number of unread pages
一本故事书已看的页数和未看页数的比是2：3，下面说法错误的是已看的页数比未看的页数少多少
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>