We're dividing 81610895 by 398 
The aim is to understand the frequency of 398 in 81610895.

Moving on to step 1:
The number 398 fits into 8 0 times, leaving a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Append the next digit (1) from the dividend to 8 and continue with: 81 / 398

Step 2:
81 divided by 398 is 0 with a remainder of 81.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 81 leaves us with 81.
Fetch the next digit (6) from the dividend, attach it to 81 and continue: 816 / 398

Let's proceed to step 3:
398 goes into 816 2 times with a remainder of 20.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Deduct 796 from 816 and we're left with 20.
Append the next digit (1) from the dividend to 20 and continue with: 201 / 398

Step 4:
The number 398 fits into 201 0 times, leaving a remainder of 201.
The number 0 becomes the next digit in our result. 
Result so far: 20.0
Deduct 0 from 201 and we're left with 201.
Append the next digit (0) from the dividend to 201 and continue with: 2010 / 398

On to step 5:
If we divide 2010 by 398, we get 5 and a remainder of 20.
The next digit of our result is 5. 
Result so far: 205.0
Subtract 1990 from 2010 to get 20.
Fetch the next digit (8) from the dividend, attach it to 20 and continue: 208 / 398

Moving on to step 6:
When dividing 208 by 398, we get 0 with a remainder of 208.
Write down 0 as next digit of the result. 
Result so far: 2050.0
Deduct 0 from 208 and we're left with 208.
Take the next digit (9) from the dividend and append it to 208, then repeat: 2089 / 398

On to step 7:
If we divide 2089 by 398, we get 5 and a remainder of 99.
Write down 5 as next digit of the result. 
Result so far: 20505.0
If we take 1990 away from 2089, we end up with 99.
Include the next digit (5) from the dividend after 99, then repeat: 995 / 398

Let's proceed to step 8:
398 goes into 995 2 times with a remainder of 199.
Put 2 as the next digit of the answer. 
Result so far: 205052.0
Subtracting 796 from 995 leaves us with 199.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1990, and continue the process.

Going ahead to step 9:
398 goes into 1990 5 times with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 205052.5
Subtract 1990 from 1990 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.

Moving on to step 10:
When dividing 0 by 398, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 205052.5
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.

On to step 11:
398 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 205052.5
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.

In conclusion, the division gives 205052.5 with a balance of 0.0.