Xiaohong plans to finish reading a story book in three days, read (1/4) of this book on the first day, (1/6) of this book on the second day, and need this book on the third day How much time do you need to finish reading the book?
小红计划三天看完一本故事书，第一天看了这本书的(1/4)，第二天看了这本书的(1/6)，第三天需要这本书的几分之几才能把书看完？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 - (1/4) - (1/6)</gadget>
<output>7/12 = around 0.583333</output>

<result>7/12 = around 0.583333</result>