Lele reads a book, read 0.25 of the whole book on the first day, and (1/3) of the whole book on the second day, what fraction of the whole book is left?
乐乐看一本书，第一天看了全书的0.25，第二天看了全书的(1/3)，还剩下全书的几分之几？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - 0.25 - (1/3)</gadget>
<output>0.416667</output>

<result>0.416667</result>