((2/3)+(4/5))/(1/15).
((2/3)+(4/5))/(1/15)．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(2/3) + (4/5)</gadget>
<output>22/15 = around 1.466667</output>

<gadget id="calculator">1 / 15</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">(22/15) / (1/15)</gadget>
<output>22</output>

<result>22</result>