If (3/4)*A=(9/8)*B=1, then A+B=how much.
如果(3/4)*A=(9/8)*B=1，那么A+B=多少．
<gadget id="calculator">4 / 3</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">8 / 9</gadget>
<output>8/9 = around 0.888889</output>

<gadget id="calculator">(4/3) + (8/9)</gadget>
<output>20/9 = around 2.222222</output>

<result>20/9 = around 2.222222</result>