((11/15)*1(3/4)+1(3/4)*(4/15))/1(3/4).
((11/15)*1(3/4)+1(3/4)*(4/15))/1(3/4)．
<gadget id="calculator">11 / 15</gadget>
<output>11/15 = around 0.733333</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 * (3/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(11/15) * (3/4)</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">4 / 15</gadget>
<output>4/15 = around 0.266667</output>

<gadget id="calculator">(3/4) * (4/15)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(11/20) + (1/5)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(3/4) / (3/4)</gadget>
<output>1</output>

<result>1</result>