A fraction whose value is equal to (28/36), if 2 is added to the numerator, it is a natural number 1, what is the original fraction?
一个分数，其值与(28/36)相等，如果分子加2，就是自然数1，求原分数是多少？
<gadget id="calculator">28 / 36</gadget>
<output>7/9 = around 0.777778</output>

<gadget id="calculator">(7/9) * 2</gadget>
<output>14/9 = around 1.555556</output>

<gadget id="calculator">1 - (7/9)</gadget>
<output>2/9 = around 0.222222</output>

<gadget id="calculator">(14/9) / (2/9)</gadget>
<output>7</output>

<gadget id="calculator">7 + 2</gadget>
<output>9</output>

<gadget id="calculator">(14/9) / (2/9) / 9</gadget>
<output>7/9 = around 0.777778</output>

<result>7/9 = around 0.777778</result>