2.77 x 10^3

+ 1.04 x 10^4

13170 is the answer. If u cant do the 10^3 power then do 10 times 10 times 10 times 10 and so on for the other number using the power numbers. You could try using a calculator and see if your answers match

2.77*10^3+1.04^10^4

2.77*10^3=2770 where (10^3=1000, so 1000*2.77)

1.04*10^4=10400 where (10^4=10000, so 10000*1.04)

2770+10400

=13170