91838966 ÷ 921 
The aim is to understand the frequency of 921 in 91838966.

Advancing to step 1:
The number 921 fits into 9 0 times, leaving a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Include the next digit (1) from the dividend after 9, then repeat: 91 / 921

Advancing to step 2:
The number 921 fits into 91 0 times, leaving a remainder of 91.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 91, we get 91.
Append the next digit (8) from the dividend to 91 and continue with: 918 / 921

Going ahead to step 3:
918 divided by 921 is 0 with a remainder of 918.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 918 after subtracting 0 from 918.
Grab the next digit (3) from the dividend, add it to 918, then carry on: 9183 / 921

Going ahead to step 4:
9183 divided by 921 is 9 with a remainder of 894.
The next digit of our result is 9. 
Result so far: 9.0
Subtracting 8289 from 9183 leaves us with 894.
Include the next digit (8) from the dividend after 894, then repeat: 8948 / 921

Going ahead to step 5:
921 goes into 8948 9 times with a remainder of 659.
The number 9 becomes the next digit in our result. 
Result so far: 99.0
If we take 8289 away from 8948, we end up with 659.
Fetch the next digit (9) from the dividend, attach it to 659 and continue: 6599 / 921

Advancing to step 6:
6599 divided by 921 is 7 with a remainder of 152.
Use 7 as the next digit of our solution. 
Result so far: 997.0
If we take 6447 away from 6599, we end up with 152.
Include the next digit (6) from the dividend after 152, then repeat: 1526 / 921

Advancing to step 7:
When dividing 1526 by 921, we get 1 with a remainder of 605.
Record the quotient 1 as the next digit in the result. 
Result so far: 9971.0
The remainder is 605 after subtracting 921 from 1526.
Include the next digit (6) from the dividend after 605, then repeat: 6056 / 921

On to step 8:
921 goes into 6056 6 times with a remainder of 530.
The number 6 becomes the next digit in our result. 
Result so far: 99716.0
If we subtract 5526 from 6056, we get 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5300, and continue the process.

Advancing to step 9:
The number 921 fits into 5300 5 times, leaving a remainder of 695.
The number 5 becomes the next digit in our result. 
Result so far: 99716.5
Subtract 4605 from 5300 to 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.

Going ahead to step 10:
921 goes into 6950 7 times with a remainder of 503.
Record the quotient 7 as the next digit in the result. 
Result so far: 99716.57
If we take 6447 away from 6950, we end up 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.

On to step 11:
The number 921 fits into 5030 5 times, leaving a remainder of 425.
The next digit of our result is 5. 
Result so far: 99716.575
Subtract 4605 from 5030 to get 425.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4250, and continue the process.

Going ahead 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: 99716.5754
Subtracting 3684 from 4250 leaves us with 566.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5660, and continue the process.

Let's proceed to step 13:
If we divide 5660 by 921, we get 6 and a remainder of 134.
The next digit of our result is 6. 
Result so far: 99716.57546
The remainder is 134 after subtracting 5526 from 5660.
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:
The number 921 fits into 1340 1 times, leaving a remainder of 419.
Record the quotient 1 as the next digit in the result. 
Result so far: 99716.575461
If we subtract 921 from 1340, we get 419.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4190, and continue the process.

Going ahead to step 15:
4190 divided by 921 is 4 with a remainder of 506.
Record the quotient 4 as the next digit in the result. 
Result so far: 99716.5754614
Subtract 3684 from 4190 to get 506.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5060, and continue the process.

Going ahead to step 16:
If we divide 5060 by 921, we get 5 and a remainder of 455.
The number 5 becomes the next digit in our result. 
Result so far: 99716.57546145
If we subtract 4605 from 5060, we get 455.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4550, and continue the process.

After the division, we end up with 99716.57546145 and a remainder of 4.55e-07.