(1/4)+(3/4)/(1/2).
(1/4)+(3/4)/(1/2)．
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

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

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(3/4) / (1/2)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">(1/4) + (3/2)</gadget>
<output>7/4 = around 1.75</output>

<result>7/4 = around 1.75</result>