When a=(1/2), b=(1/3), (a+b)/(5*b)=how much.
当a=(1/2)，b=(1/3)，(a+b)/(5*b)=多少．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/2) + (1/3)</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">5 * (1/3)</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">(5/6) / (5/3)</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>