We divide 906183 by 91
The aim is to understand the frequency of 91 in 906183.

On to step 1:
9 divided by 91 is 0 with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Bring next digit (0) of the dividend behind the 9 and repeat the process: 90 / 91

Going ahead to step 2:
91 goes into 90 0 times with a remainder of 90.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 90 to get 90.
Bring next digit (6) of the dividend behind the 90 and repeat the process: 906 / 91

Advancing to step 3:
906 divided by 91 is 9 with a remainder of 87.
The next digit of our result is 9. 
Result so far: 9.0
Subtract 819 from 906 to get 87.
Bring next digit (1) of the dividend behind the 87 and repeat the process: 871 / 91

On to step 4:
The number 91 fits into 871 9 times, leaving a remainder of 52.
Record the quotient 9 as the next digit in the result. 
Result so far: 99.0
If we take 819 away from 871, we end up with 52.
Take the next digit (8) from the dividend and append it to 52, then repeat: 528 / 91

Advancing to step 5:
91 goes into 528 5 times with a remainder of 73.
The number 5 becomes the next digit in our result. 
Result so far: 995.0
If we subtract 455 from 528, we get 73.
Take the next digit (3) from the dividend and append it to 73, then repeat: 733 / 91

On to step 6:
91 can be fit into 733 8 times, resulting in a remainder of 5.
The next digit of our result is 8. 
Result so far: 9958.0
If we take 728 away from 733, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 7:
The number 91 fits into 50 0 times, leaving a remainder of 50.
Use 0 as the next digit of our solution. 
Result so far: 9958.0
If we subtract 0 from 50, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 8:
The number 91 fits into 500 5 times, leaving a remainder of 45.
Use 5 as the next digit of our solution. 
Result so far: 9958.05
If we take 455 away from 500, we end up with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Going ahead to step 9:
91 goes into 450 4 times with a remainder of 86.
The next digit of our result is 4. 
Result so far: 9958.054
Subtracting 364 from 450 leaves us with 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Going ahead to step 10:
860 divided by 91 is 9 with a remainder of 41.
Record the quotient 9 as the next digit in the result. 
Result so far: 9958.0549
If we subtract 819 from 860, we get 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Let's proceed to step 11:
91 can be fit into 410 4 times, resulting in a remainder of 46.
Use 4 as the next digit of our solution. 
Result so far: 9958.05494
If we take 364 away from 410, we end up with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 12:
If we divide 460 by 91, we get 5 and a remainder of 5.
The next digit of our result is 5. 
Result so far: 9958.054945
If we subtract 455 from 460, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 13:
If we divide 50 by 91, we get 0 and a remainder of 50.
Record the quotient 0 as the next digit in the result. 
Result so far: 9958.054945
If we take 0 away from 50, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 14:
91 goes into 500 5 times with a remainder of 45.
Use 5 as the next digit of our solution. 
Result so far: 9958.05494505
Deduct 455 from 500 and we're left with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Our division results in 9958.05494505 with a remaining 4.5e-08.