Calculation: (4/15)/(9/5)+(11/15)*(5/9).
计算：(4/15)/(9/5)+(11/15)*(5/9)．
<gadget id="calculator">4 / 15</gadget>
<output>4/15 = around 0.266667</output>

<gadget id="calculator">9 / 5</gadget>
<output>9/5 = around 1.8</output>

<gadget id="calculator">(4/15) / (9/5)</gadget>
<output>4/27 = around 0.148148</output>

<gadget id="calculator">11 / 15</gadget>
<output>11/15 = around 0.733333</output>

<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">(11/15) * (5/9)</gadget>
<output>11/27 = around 0.407407</output>

<gadget id="calculator">(4/27) + (11/27)</gadget>
<output>5/9 = around 0.555556</output>

<result>5/9 = around 0.555556</result>