Let's divide 91873082 by 891
The aim is to understand the frequency of 891 in 91873082.

Moving on to step 1:
891 can be fit into 9 0 times, resulting in a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Include the next digit (1) from the dividend after 9, then repeat: 91 / 891

Advancing to step 2:
The number 891 fits into 91 0 times, leaving a remainder of 91.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 91 to get 91.
Include the next digit (8) from the dividend after 91, then repeat: 918 / 891

Moving on to step 3:
If we divide 918 by 891, we get 1 and a remainder of 27.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 891 away from 918, we end up with 27.
Append the next digit (7) from the dividend to 27 and continue with: 277 / 891

Moving on to step 4:
891 goes into 277 0 times with a remainder of 277.
The next digit of our result is 0. 
Result so far: 10.0
If we take 0 away from 277, we end up with 277.
Fetch the next digit (3) from the dividend, attach it to 277 and continue: 2773 / 891

Advancing to step 5:
The number 891 fits into 2773 3 times, leaving a remainder of 100.
The number 3 becomes the next digit in our result. 
Result so far: 103.0
The remainder is 100 after subtracting 2673 from 2773.
Bring next digit (0) of the dividend behind the 100 and repeat the process: 1000 / 891

Going ahead to step 6:
891 goes into 1000 1 times with a remainder of 109.
Put 1 as the next digit of the answer. 
Result so far: 1031.0
Subtract 891 from 1000 to get 109.
Grab the next digit (8) from the dividend, add it to 109, then carry on: 1098 / 891

Advancing to step 7:
If we divide 1098 by 891, we get 1 and a remainder of 207.
Use 1 as the next digit of our solution. 
Result so far: 10311.0
Subtract 891 from 1098 to get 207.
Include the next digit (2) from the dividend after 207, then repeat: 2072 / 891

Step 8:
If we divide 2072 by 891, we get 2 and a remainder of 290.
Put 2 as the next digit of the answer. 
Result so far: 103112.0
The remainder is 290 after subtracting 1782 from 2072.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Moving on to step 9:
The number 891 fits into 2900 3 times, leaving a remainder of 227.
The number 3 becomes the next digit in our result. 
Result so far: 103112.3
If we take 2673 away from 2900, we end up with 227.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2270, and continue the process.

On to step 10:
If we divide 2270 by 891, we get 2 and a remainder of 488.
Write down 2 as next digit of the result. 
Result so far: 103112.32
If we subtract 1782 from 2270, we get 488.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4880, and continue the process.

On to step 11:
The number 891 fits into 4880 5 times, leaving a remainder of 425.
Write down 5 as next digit of the result. 
Result so far: 103112.325
Subtracting 4455 from 4880 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:
891 goes into 4250 4 times with a remainder of 686.
Record the quotient 4 as the next digit in the result. 
Result so far: 103112.3254
If we subtract 3564 from 4250, we get 686.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6860, and continue the process.

Going ahead to step 13:
When dividing 6860 by 891, we get 7 with a remainder of 623.
The number 7 becomes the next digit in our result. 
Result so far: 103112.32547
Subtract 6237 from 6860 to get 623.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6230, and continue the process.

On to step 14:
If we divide 6230 by 891, we get 6 and a remainder of 884.
Put 6 as the next digit of the answer. 
Result so far: 103112.325476
If we subtract 5346 from 6230, we get 884.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8840, and continue the process.

Let's proceed to step 15:
8840 divided by 891 is 9 with a remainder of 821.
Use 9 as the next digit of our solution. 
Result so far: 103112.3254769
If we take 8019 away from 8840, we end up with 821.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8210, and continue the process.

Step 16:
891 can be fit into 8210 9 times, resulting in a remainder of 191.
The number 9 becomes the next digit in our result. 
Result so far: 103112.32547699
If we take 8019 away from 8210, we end up with 191.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1910, and continue the process.

The final outcome is 103112.32547699, with a leftover of 1.91e-07.