We look at the division of 421198 by 4 
We want to figure out the number of times 421198 can be divided by 4.

Let's proceed to step 1:
When dividing 4 by 4, we get 1 with a remainder of 0.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 4 from 4 to get 0.
Grab the next digit (2) from the dividend, add it to 0, then carry on: 2 / 4

Let's proceed to step 2:
The number 4 fits into 2 0 times, leaving a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
Subtract 0 from 2 to get 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 4

Step 3:
4 goes into 21 5 times with a remainder of 1.
The number 5 becomes the next digit in our result. 
Result so far: 105.0
If we take 20 away from 21, we end up with 1.
Include the next digit (1) from the dividend after 1, then repeat: 11 / 4

Moving on to step 4:
4 goes into 11 2 times with a remainder of 3.
Put 2 as the next digit of the answer. 
Result so far: 1052.0
Subtract 8 from 11 to get 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 4

Step 5:
If we divide 39 by 4, we get 9 and a remainder of 3.
Use 9 as the next digit of our solution. 
Result so far: 10529.0
If we subtract 36 from 39, we get 3.
Take the next digit (8) from the dividend and append it to 3, then repeat: 38 / 4

On to step 6:
If we divide 38 by 4, we get 9 and a remainder of 2.
The next digit of our result is 9. 
Result so far: 105299.0
Subtracting 36 from 38 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 7:
20 divided by 4 is 5 with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 105299.5
If we subtract 20 from 20, 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.

Going ahead to step 8:
4 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 105299.5
The remainder is 0 after subtracting 0 from 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 9:
When dividing 0 by 4, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 105299.5
Deduct 0 from 0 and we're left 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.

After the division, we end up with 105299.5 and a remainder of 0.0.