83864027 divided by 921 
The aim is to understand the frequency of 921 in 83864027.

Let's proceed to step 1:
8 divided by 921 is 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Take the next digit (3) from the dividend and append it to 8, then repeat: 83 / 921

Going ahead to step 2:
If we divide 83 by 921, we get 0 and a remainder of 83.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 83, we get 83.
Include the next digit (8) from the dividend after 83, then repeat: 838 / 921

On to step 3:
921 can be fit into 838 0 times, resulting in a remainder of 838.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 838, we end up with 838.
Append the next digit (6) from the dividend to 838 and continue with: 8386 / 921

On to step 4:
8386 divided by 921 is 9 with a remainder of 97.
Use 9 as the next digit of our solution. 
Result so far: 9.0
If we subtract 8289 from 8386, we get 97.
Take the next digit (4) from the dividend and append it to 97, then repeat: 974 / 921

On to step 5:
The number 921 fits into 974 1 times, leaving a remainder of 53.
Put 1 as the next digit of the answer. 
Result so far: 91.0
Subtract 921 from 974 to get 53.
Append the next digit (0) from the dividend to 53 and continue with: 530 / 921

On to step 6:
If we divide 530 by 921, we get 0 and a remainder of 530.
Put 0 as the next digit of the answer. 
Result so far: 910.0
Subtract 0 from 530 to get 530.
Grab the next digit (2) from the dividend, add it to 530, then carry on: 5302 / 921

Moving on to step 7:
5302 divided by 921 is 5 with a remainder of 697.
Record the quotient 5 as the next digit in the result. 
Result so far: 9105.0
Subtracting 4605 from 5302 leaves us with 697.
Bring next digit (7) of the dividend behind the 697 and repeat the process: 6977 / 921

Going ahead to step 8:
6977 divided by 921 is 7 with a remainder of 530.
Record the quotient 7 as the next digit in the result. 
Result so far: 91057.0
Subtracting 6447 from 6977 leaves us with 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5300, and continue the process.

Let's proceed to step 9:
The number 921 fits into 5300 5 times, leaving a remainder of 695.
Use 5 as the next digit of our solution. 
Result so far: 91057.5
If we subtract 4605 from 5300, we get 695.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6950, and continue the process.

Step 10:
The number 921 fits into 6950 7 times, leaving a remainder of 503.
Write down 7 as next digit of the result. 
Result so far: 91057.57
Deduct 6447 from 6950 and we're left with 503.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5030, and continue the process.

Going ahead to step 11:
921 can be fit into 5030 5 times, resulting in a remainder of 425.
Use 5 as the next digit of our solution. 
Result so far: 91057.575
Subtracting 4605 from 5030 leaves us with 425.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4250, and continue the process.

Let's proceed to step 12:
When dividing 4250 by 921, we get 4 with a remainder of 566.
Record the quotient 4 as the next digit in the result. 
Result so far: 91057.5754
The remainder is 566 after subtracting 3684 from 4250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5660, and continue the process.

Moving on to step 13:
If we divide 5660 by 921, we get 6 and a remainder of 134.
Use 6 as the next digit of our solution. 
Result so far: 91057.57546
If we subtract 5526 from 5660, we get 134.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1340, and continue the process.

Going ahead to step 14:
If we divide 1340 by 921, we get 1 and a remainder of 419.
Use 1 as the next digit of our solution. 
Result so far: 91057.575461
Deduct 921 from 1340 and we're left with 419.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4190, and continue the process.

Moving on to step 15:
When dividing 4190 by 921, we get 4 with a remainder of 506.
The number 4 becomes the next digit in our result. 
Result so far: 91057.5754614
Deduct 3684 from 4190 and we're left with 506.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5060, and continue the process.

Advancing to step 16:
921 goes into 5060 5 times with a remainder of 455.
Record the quotient 5 as the next digit in the result. 
Result so far: 91057.57546145
If we take 4605 away from 5060, we end up with 455.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4550, and continue the process.

Our division results in 91057.57546145 with a remaining 4.55e-07.