First add up the numbers in the parentheses. 8+19, take that answer plus 71. When doing large questions like this I prefer to do things like this.
71
+ 27
_____
Take the ones column, adding it up, 1 plus 7, then put that 8 down here like this:
71
+ 27
_____
8
Then add add the other two, 7 plus 2 is 9. So you would end up with something like this:
71
+ 27
_____
98
