After adding (1/2) to 5 kilograms, then reducing (1/2) kilograms, what is the result in kilograms
5公斤增加它的(1/2)后，再减少(1/2)公斤，结果是多少公斤
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 + (1/2)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">5 * (3/2)</gadget>
<output>15/2 = around 7.5</output>

<gadget id="calculator">(15/2) - (1/2)</gadget>
<output>7</output>

<result>7</result>