What is the result of (3/10)+(5/10) expressed in decimals.
(3/10)+(5/10)的结果用小数表示是多少．
<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">5 / 10</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(3/10) + (1/2)</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>