For a fraction, the sum of the numerator and denominator is 200, which equals (2/3) after division. What is the original score?
一个分数，分子、分母之和是200，约分后等于(2/3)．原来这个分数是多少？
<gadget id="calculator">2 + 3</gadget>
<output>5</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">200 * (2/5)</gadget>
<output>80</output>

<gadget id="calculator">200 - 80</gadget>
<output>120</output>

<gadget id="calculator">(2/5) / 120</gadget>
<output>1/300 = around 0.003333</output>

<gadget id="calculator">200 * (1/300)</gadget>
<output>2/3 = around 0.666667</output>

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