21120 ÷ 5 = 4224 R0
Alright, let's work through the division of 21120 by 5 step by step.

Step 1:
5 goes into 2 0 times with a remainder of 2.
Write down 0 as next digit of of the result. 
Result so far: 0
Subtract 0 from 2 to get 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 5

Step 2:
5 goes into 21 4 times with a remainder of 1.
Write down 4 as next digit of of the result. 
Result so far: 4
Subtract 20 from 21 to get 1.
Bring next digit (1) of the dividend behind the 1 and repeat the process: 11 / 5

Step 3:
5 goes into 11 2 times with a remainder of 1.
Write down 2 as next digit of of the result. 
Result so far: 42
Subtract 10 from 11 to get 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 5

Step 4:
5 goes into 12 2 times with a remainder of 2.
Write down 2 as next digit of of the result. 
Result so far: 422
Subtract 10 from 12 to get 2.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 5

Step 5:
5 goes into 20 4 times with a remainder of 0.
Write down 4 as next digit of of the result. 
Result so far: 4224
Subtract 20 from 20 to get 0.

The final result is 4224 with a remainder of 0.