We look at the division of 221604 by 4 
We're looking to find how many times 4 goes into 221604.

On to step 1:
2 divided by 4 is 0 with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Include the next digit (2) from the dividend after 2, then repeat: 22 / 4

Advancing to step 2:
4 goes into 22 5 times with a remainder of 2.
Write down 5 as next digit of the result. 
Result so far: 5.0
Subtracting 20 from 22 leaves us with 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 4

Advancing to step 3:
If we divide 21 by 4, we get 5 and a remainder of 1.
Put 5 as the next digit of the answer. 
Result so far: 55.0
If we subtract 20 from 21, we get 1.
Include the next digit (6) from the dividend after 1, then repeat: 16 / 4

Step 4:
16 divided by 4 is 4 with a remainder of 0.
Put 4 as the next digit of the answer. 
Result so far: 554.0
If we subtract 16 from 16, we get 0.
Fetch the next digit (0) from the dividend, attach it to 0 and continue: 0 / 4

Let's proceed to step 5:
If we divide 0 by 4, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 5540.0
Subtract 0 from 0 to get 0.
Bring next digit (4) of the dividend behind the 0 and repeat the process: 4 / 4

Let's proceed to step 6:
The number 4 fits into 4 1 times, leaving a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 55401.0
Subtracting 4 from 4 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 7:
4 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 55401.0
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 8:
When dividing 0 by 4, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 55401.0
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 55401.0 with a remainder of 0.0.