For a fraction in its simplest form, if 1 is added to the numerator, the value of the fraction is equal to 1, and if 1 is added to the denominator, the value of the fraction is equal to (1/2). What was the original score?
一个最简分数，如果分子加1，分数值等于1，如果分母加1，分数值等(1/2)．原来的分数是多少？
<gadget id="calculator">1 + 1</gadget>
<output>2</output>

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

<gadget id="calculator">2 / 1 / 3</gadget>
<output>2/3 = around 0.666667</output>

<result>2/3 = around 0.666667</result>