What is the difference between (4/5) and (1/3) multiplied by it?
(4/5)与(1/3)的和乘它的差是多少？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

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

<gadget id="calculator">(4/5) + (1/3)</gadget>
<output>17/15 = around 1.133333</output>

<gadget id="calculator">(4/5) - (1/3)</gadget>
<output>7/15 = around 0.466667</output>

<gadget id="calculator">(17/15) * (7/15)</gadget>
<output>119/225 = around 0.528889</output>

<result>119/225 = around 0.528889</result>