We're dividing 81904614 by 398 
The aim is to understand the frequency of 398 in 81904614.

Let's proceed to step 1:
When dividing 8 by 398, we get 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 398

Step 2:
The number 398 fits into 81 0 times, leaving a remainder of 81.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 81, we end up with 81.
Grab the next digit (9) from the dividend, add it to 81, then carry on: 819 / 398

Moving on to step 3:
When dividing 819 by 398, we get 2 with a remainder of 23.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtracting 796 from 819 leaves us with 23.
Bring next digit (0) of the dividend behind the 23 and repeat the process: 230 / 398

Let's proceed to step 4:
398 can be fit into 230 0 times, resulting in a remainder of 230.
Write down 0 as next digit of the result. 
Result so far: 20.0
The remainder is 230 after subtracting 0 from 230.
Take the next digit (4) from the dividend and append it to 230, then repeat: 2304 / 398

Advancing to step 5:
398 can be fit into 2304 5 times, resulting in a remainder of 314.
Write down 5 as next digit of the result. 
Result so far: 205.0
Subtract 1990 from 2304 to get 314.
Grab the next digit (6) from the dividend, add it to 314, then carry on: 3146 / 398

Going ahead to step 6:
398 goes into 3146 7 times with a remainder of 360.
The next digit of our result is 7. 
Result so far: 2057.0
Subtract 2786 from 3146 to get 360.
Append the next digit (1) from the dividend to 360 and continue with: 3601 / 398

Advancing to step 7:
3601 divided by 398 is 9 with a remainder of 19.
Record the quotient 9 as the next digit in the result. 
Result so far: 20579.0
Subtracting 3582 from 3601 leaves us with 19.
Fetch the next digit (4) from the dividend, attach it to 19 and continue: 194 / 398

Advancing to step 8:
When dividing 194 by 398, we get 0 with a remainder of 194.
Put 0 as the next digit of the answer. 
Result so far: 205790.0
If we subtract 0 from 194, we get 194.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1940, and continue the process.

On to step 9:
When dividing 1940 by 398, we get 4 with a remainder of 348.
Use 4 as the next digit of our solution. 
Result so far: 205790.4
Subtract 1592 from 1940 to get 348.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3480, and continue the process.

Advancing to step 10:
When dividing 3480 by 398, we get 8 with a remainder of 296.
Write down 8 as next digit of the result. 
Result so far: 205790.48
If we take 3184 away from 3480, we end up with 296.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2960, and continue the process.

Going ahead to step 11:
If we divide 2960 by 398, we get 7 and a remainder of 174.
Use 7 as the next digit of our solution. 
Result so far: 205790.487
Subtracting 2786 from 2960 leaves us with 174.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1740, and continue the process.

Going ahead to step 12:
398 can be fit into 1740 4 times, resulting in a remainder of 148.
Put 4 as the next digit of the answer. 
Result so far: 205790.4874
Subtracting 1592 from 1740 leaves us with 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

On to step 13:
398 can be fit into 1480 3 times, resulting in a remainder of 286.
The number 3 becomes the next digit in our result. 
Result so far: 205790.48743
Subtract 1194 from 1480 to get 286.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2860, and continue the process.

Advancing to step 14:
When dividing 2860 by 398, we get 7 with a remainder of 74.
The next digit of our result is 7. 
Result so far: 205790.487437
Deduct 2786 from 2860 and we're left with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Step 15:
398 can be fit into 740 1 times, resulting in a remainder of 342.
Use 1 as the next digit of our solution. 
Result so far: 205790.4874371
The remainder is 342 after subtracting 398 from 740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3420, and continue the process.

On to step 16:
3420 divided by 398 is 8 with a remainder of 236.
Record the quotient 8 as the next digit in the result. 
Result so far: 205790.48743718
Subtracting 3184 from 3420 leaves us with 236.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2360, and continue the process.

Our division results in 205790.48743718 with a remaining 2.36e-07.