Xiao Ming used (1/3) of a piece of paper to fold a boat, and Xiao Hong used (1/4) of the same piece of paper to fold a bird. How much of this paper did they share?
小明用一张纸的(1/3)折一只小船，小红用同一张纸的(1/4)折一只小鸟，他们一共用了这张纸的几分之几？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/3) + (1/4)</gadget>
<output>7/12 = around 0.583333</output>

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