A book with a total of 125 pages has read its (2/5), how many pages have you read.
一本书共125页的书看了它的(2/5)，看了多少页．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">125 * (2/5)</gadget>
<output>50</output>

<result>50</result>