5403 ÷ 5 = 1080 R3
We're going to perform division on 5403 with 5 as the divisor.

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

Step 2:
5 goes into 4 0 times with a remainder of 4.
Write down 0 as next digit of of the result. 
Result so far: 10
Subtract 0 from 4 to get 4.
Bring next digit (0) of the dividend behind the 4 and repeat the process: 40 / 5

Step 3:
5 goes into 40 8 times with a remainder of 0.
Write down 8 as next digit of of the result. 
Result so far: 108
Subtract 40 from 40 to get 0.
Bring next digit (3) of the dividend behind the 0 and repeat the process: 3 / 5

Step 4:
5 goes into 3 0 times with a remainder of 3.
Write down 0 as next digit of of the result. 
Result so far: 1080
Subtract 0 from 3 to get 3.

The final result is 1080 with a remainder of 3.