Nick is 13 years old. His sister is 6 years older and their brother is half their combined age. How old would their brother be in 5 years?
Nick's sister is 13 + 6 = 
<gadget id="calculator">13+6</gadget>
<output>19</output>
19 years old.
Their combined age is 19 + 13 = 
<gadget id="calculator">19+13</gadget>
<output>32</output>
32 years old.
Their brother is 32/2 = 
<gadget id="calculator">32/2</gadget>
<output>16</output>
16 years old.
In 5 years, their brother would be 16 + 5 = 21 years old.

<result>21</result>