(2/5)+1+(3/5).
(2/5)+1+(3/5)．
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

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

<result>2</result>