5409 ÷ 8 = 676 R1
Let's divide 5409 by 8.

Step 1:
8 goes into 5 0 times with a remainder of 5.
Write down 0 as next digit of of the result. 
Result so far: 0
Subtract 0 from 5 to get 5.
Bring next digit (4) of the dividend behind the 5 and repeat the process: 54 / 8

Step 2:
8 goes into 54 6 times with a remainder of 6.
Write down 6 as next digit of of the result. 
Result so far: 6
Subtract 48 from 54 to get 6.
Bring next digit (0) of the dividend behind the 6 and repeat the process: 60 / 8

Step 3:
8 goes into 60 7 times with a remainder of 4.
Write down 7 as next digit of of the result. 
Result so far: 67
Subtract 56 from 60 to get 4.
Bring next digit (9) of the dividend behind the 4 and repeat the process: 49 / 8

Step 4:
8 goes into 49 6 times with a remainder of 1.
Write down 6 as next digit of of the result. 
Result so far: 676
Subtract 48 from 49 to get 1.

The final result is 676 with a remainder of 1.