(3/5) plus a number, (2/3) minus the same number, the results of the two calculations are the same, then what is the equal result?
(3/5)加上一个数，(2/3)减去同一个数，两次计算的结果相同，那么这个相等的结果是多少．
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(2/3) - (3/5)</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">1 + 1</gadget>
<output>2</output>

<gadget id="calculator">(1/15) / 2</gadget>
<output>1/30 = around 0.033333</output>

<gadget id="calculator">(3/5) + (1/30)</gadget>
<output>19/30 = around 0.633333</output>

<result>19/30 = around 0.633333</result>