Let's divide 86821223 by 939
The aim is to understand the frequency of 939 in 86821223.

Advancing to step 1:
8 divided by 939 is 0 with 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.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 939

Going ahead to step 2:
The number 939 fits into 86 0 times, leaving a remainder of 86.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 86, we end up with 86.
Include the next digit (8) from the dividend after 86, then repeat: 868 / 939

Advancing to step 3:
If we divide 868 by 939, we get 0 and a remainder of 868.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 868, we get 868.
Grab the next digit (2) from the dividend, add it to 868, then carry on: 8682 / 939

Advancing to step 4:
8682 divided by 939 is 9 with a remainder of 231.
Use 9 as the next digit of our solution. 
Result so far: 9.0
Deduct 8451 from 8682 and we're left with 231.
Include the next digit (1) from the dividend after 231, then repeat: 2311 / 939

Let's proceed to step 5:
939 goes into 2311 2 times with a remainder of 433.
The number 2 becomes the next digit in our result. 
Result so far: 92.0
Subtracting 1878 from 2311 leaves us with 433.
Grab the next digit (2) from the dividend, add it to 433, then carry on: 4332 / 939

Advancing to step 6:
939 can be fit into 4332 4 times, resulting in a remainder of 576.
Use 4 as the next digit of our solution. 
Result so far: 924.0
Deduct 3756 from 4332 and we're left with 576.
Include the next digit (2) from the dividend after 576, then repeat: 5762 / 939

Let's proceed to step 7:
The number 939 fits into 5762 6 times, leaving a remainder of 128.
Put 6 as the next digit of the answer. 
Result so far: 9246.0
Deduct 5634 from 5762 and we're left with 128.
Grab the next digit (3) from the dividend, add it to 128, then carry on: 1283 / 939

Let's proceed to step 8:
1283 divided by 939 is 1 with a remainder of 344.
The number 1 becomes the next digit in our result. 
Result so far: 92461.0
If we subtract 939 from 1283, we get 344.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

On to step 9:
If we divide 3440 by 939, we get 3 and a remainder of 623.
Write down 3 as next digit of the result. 
Result so far: 92461.3
The remainder is 623 after subtracting 2817 from 3440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6230, and continue the process.

Going ahead to step 10:
The number 939 fits into 6230 6 times, leaving a remainder of 596.
The next digit of our result is 6. 
Result so far: 92461.36
Subtracting 5634 from 6230 leaves us with 596.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5960, and continue the process.

On to step 11:
When dividing 5960 by 939, we get 6 with a remainder of 326.
Write down 6 as next digit of the result. 
Result so far: 92461.366
Subtract 5634 from 5960 to get 326.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3260, and continue the process.

After the division, we end up with 92461.366 and a remainder of 0.0326.