Patrick is half the age of his elder brother Robert. If Robert will turn 30 after 2 years, how old is Patrick now?
The age of Robert now is 30 - 2 = 
<gadget id="calculator">30-2</gadget>
<output>28</output>
28 years old.
So, Patrick is 28 / 2 = 
<gadget id="calculator">28/2</gadget>
<output>14</output>
14 years old.

<result>14</result>