The number A is (2/3) of the number B, and the number B is the sum of A and B
甲数是乙数的(2/3)，乙数是甲乙之和的多少
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 + (2/3)</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">1 / (5/3)</gadget>
<output>3/5 = around 0.6</output>

<result>3/5 = around 0.6</result>