The numerator and denominator of (2013/2015) are equal to (2015/2016) by adding positive integers at the same time.
(2013/2015)的分子分母同时加上正整数多少等于(2015/2016)．
<gadget id="calculator">2_015 / 2_016</gadget>
<output>2_015/2_016 = around 0.999504</output>

<gadget id="calculator">(2_015/2_016) * 2_015</gadget>
<output>4_060_225/2_016 = around 2_014.000496</output>

<gadget id="calculator">(4_060_225/2_016) - 2_013</gadget>
<output>2_017/2_016 = around 1.000496</output>

<gadget id="calculator">1 - (2_015/2_016)</gadget>
<output>1/2_016 = around 0.000496</output>

<gadget id="calculator">(2_017/2_016) / (1/2_016)</gadget>
<output>2_017</output>

<result>2_017</result>