We look at the division of 12215635 by 398 
We're looking to find how many times 398 goes into 12215635.

Let's proceed to step 1:
398 goes into 1 0 times with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 398

Step 2:
12 divided by 398 is 0 with a remainder of 12.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 12 after subtracting 0 from 12.
Take the next digit (2) from the dividend and append it to 12, then repeat: 122 / 398

Step 3:
If we divide 122 by 398, we get 0 and a remainder of 122.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 122 leaves us with 122.
Bring next digit (1) of the dividend behind the 122 and repeat the process: 1221 / 398

Going ahead to step 4:
1221 divided by 398 is 3 with a remainder of 27.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we take 1194 away from 1221, we end up with 27.
Append the next digit (5) from the dividend to 27 and continue with: 275 / 398

Moving on to step 5:
398 goes into 275 0 times with a remainder of 275.
The next digit of our result is 0. 
Result so far: 30.0
If we take 0 away from 275, we end up with 275.
Fetch the next digit (6) from the dividend, attach it to 275 and continue: 2756 / 398

Moving on to step 6:
2756 divided by 398 is 6 with a remainder of 368.
The next digit of our result is 6. 
Result so far: 306.0
If we take 2388 away from 2756, we end up with 368.
Bring next digit (3) of the dividend behind the 368 and repeat the process: 3683 / 398

Let's proceed to step 7:
398 can be fit into 3683 9 times, resulting in a remainder of 101.
The number 9 becomes the next digit in our result. 
Result so far: 3069.0
If we take 3582 away from 3683, we end up with 101.
Include the next digit (5) from the dividend after 101, then repeat: 1015 / 398

Moving on to step 8:
1015 divided by 398 is 2 with a remainder of 219.
The number 2 becomes the next digit in our result. 
Result so far: 30692.0
Subtracting 796 from 1015 leaves us with 219.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2190, and continue the process.

Let's proceed to step 9:
When dividing 2190 by 398, we get 5 with a remainder of 200.
Use 5 as the next digit of our solution. 
Result so far: 30692.5
If we subtract 1990 from 2190, we get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Going ahead to step 10:
If we divide 2000 by 398, we get 5 and a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 30692.55
Deduct 1990 from 2000 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

After the division, we end up with 30692.55 and a remainder of 0.01.