Calculation: (1/2015)+(2/2015)+...+(2013/2015)+(2014/2015).
计算：(1/2015)+(2/2015)+…+(2013/2015)+(2014/2015)．
<gadget id="calculator">1 + 2_014</gadget>
<output>2_015</output>

<gadget id="calculator">2_014 / 2</gadget>
<output>1_007</output>

<gadget id="calculator">2_015 * 1_007</gadget>
<output>2_029_105</output>

<gadget id="calculator">2_029_105 / 2_015</gadget>
<output>1_007</output>

<result>1_007</result>