Let's divide 90644120 by 398
Our goal is to divide 90644120 by 398.

Let's proceed to step 1:
398 can be fit into 9 0 times, resulting in a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Include the next digit (0) from the dividend after 9, then repeat: 90 / 398

Advancing to step 2:
90 divided by 398 is 0 with a remainder of 90.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 90, we get 90.
Fetch the next digit (6) from the dividend, attach it to 90 and continue: 906 / 398

Going ahead to step 3:
906 divided by 398 is 2 with a remainder of 110.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtract 796 from 906 to get 110.
Include the next digit (4) from the dividend after 110, then repeat: 1104 / 398

Advancing to step 4:
When dividing 1104 by 398, we get 2 with a remainder of 308.
Write down 2 as next digit of the result. 
Result so far: 22.0
The remainder is 308 after subtracting 796 from 1104.
Append the next digit (4) from the dividend to 308 and continue with: 3084 / 398

Going ahead to step 5:
When dividing 3084 by 398, we get 7 with a remainder of 298.
The next digit of our result is 7. 
Result so far: 227.0
If we subtract 2786 from 3084, we get 298.
Append the next digit (1) from the dividend to 298 and continue with: 2981 / 398

Step 6:
398 can be fit into 2981 7 times, resulting in a remainder of 195.
Write down 7 as next digit of the result. 
Result so far: 2277.0
Subtracting 2786 from 2981 leaves us with 195.
Append the next digit (2) from the dividend to 195 and continue with: 1952 / 398

On to step 7:
If we divide 1952 by 398, we get 4 and a remainder of 360.
Record the quotient 4 as the next digit in the result. 
Result so far: 22774.0
Subtracting 1592 from 1952 leaves us with 360.
Take the next digit (0) from the dividend and append it to 360, then repeat: 3600 / 398

On to step 8:
398 goes into 3600 9 times with a remainder of 18.
Put 9 as the next digit of the answer. 
Result so far: 227749.0
If we take 3582 away from 3600, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 9:
398 goes into 180 0 times with a remainder of 180.
The number 0 becomes the next digit in our result. 
Result so far: 227749.0
Deduct 0 from 180 and we're left with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Step 10:
398 can be fit into 1800 4 times, resulting in a remainder of 208.
Record the quotient 4 as the next digit in the result. 
Result so far: 227749.04
Subtract 1592 from 1800 to get 208.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

Step 11:
When dividing 2080 by 398, we get 5 with a remainder of 90.
Write down 5 as next digit of the result. 
Result so far: 227749.045
The remainder is 90 after subtracting 1990 from 2080.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Let's proceed to step 12:
When dividing 900 by 398, we get 2 with a remainder of 104.
The number 2 becomes the next digit in our result. 
Result so far: 227749.0452
The remainder is 104 after subtracting 796 from 900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

Moving on to step 13:
398 goes into 1040 2 times with a remainder of 244.
The next digit of our result is 2. 
Result so far: 227749.04522
Subtract 796 from 1040 to get 244.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2440, and continue the process.

The final result is 227749.04522 with a remainder of 0.000244.