What is the value of 3.5*0.8+5.5*80%+(4/5). How many
3.5*0.8+5.5*80%+(4/5)的值是多少．多少
<gadget id="calculator">3.5 * 0.8</gadget>
<output>2.8</output>

<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">5.5 * (4/5)</gadget>
<output>4.4</output>

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">2.8 + 4.4 + (4/5)</gadget>
<output>8</output>

<result>8</result>