We're dividing 473958 by 91 
The aim is to understand the frequency of 91 in 473958.

Advancing to step 1:
91 goes into 4 0 times with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Include the next digit (7) from the dividend after 4, then repeat: 47 / 91

On to step 2:
When dividing 47 by 91, we get 0 with a remainder of 47.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 47 and we're left with 47.
Append the next digit (3) from the dividend to 47 and continue with: 473 / 91

On to step 3:
91 goes into 473 5 times with a remainder of 18.
Write down 5 as next digit of the result. 
Result so far: 5.0
The remainder is 18 after subtracting 455 from 473.
Take the next digit (9) from the dividend and append it to 18, then repeat: 189 / 91

Advancing to step 4:
189 divided by 91 is 2 with a remainder of 7.
Write down 2 as next digit of the result. 
Result so far: 52.0
Deduct 182 from 189 and we're left with 7.
Bring next digit (5) of the dividend behind the 7 and repeat the process: 75 / 91

Let's proceed to step 5:
When dividing 75 by 91, we get 0 with a remainder of 75.
Put 0 as the next digit of the answer. 
Result so far: 520.0
Subtracting 0 from 75 leaves us with 75.
Grab the next digit (8) from the dividend, add it to 75, then carry on: 758 / 91

Going ahead to step 6:
91 goes into 758 8 times with a remainder of 30.
Write down 8 as next digit of the result. 
Result so far: 5208.0
Subtract 728 from 758 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 7:
The number 91 fits into 300 3 times, leaving a remainder of 27.
Write down 3 as next digit of the result. 
Result so far: 5208.3
Deduct 273 from 300 and we're left with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Moving on to step 8:
If we divide 270 by 91, we get 2 and a remainder of 88.
Record the quotient 2 as the next digit in the result. 
Result so far: 5208.32
Deduct 182 from 270 and we're left with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

On to step 9:
91 can be fit into 880 9 times, resulting in a remainder of 61.
The next digit of our result is 9. 
Result so far: 5208.329
Subtract 819 from 880 to get 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Step 10:
The number 91 fits into 610 6 times, leaving a remainder of 64.
Use 6 as the next digit of our solution. 
Result so far: 5208.3296
Deduct 546 from 610 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

On to step 11:
The number 91 fits into 640 7 times, leaving a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 5208.32967
If we take 637 away from 640, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 12:
When dividing 30 by 91, we get 0 with a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 5208.32967
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 13:
91 goes into 300 3 times with a remainder of 27.
Use 3 as the next digit of our solution. 
Result so far: 5208.3296703
Subtract 273 from 300 to get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Let's proceed to step 14:
When dividing 270 by 91, we get 2 with a remainder of 88.
Use 2 as the next digit of our solution. 
Result so far: 5208.32967032
Subtracting 182 from 270 leaves us with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

The final result is 5208.32967032 with a remainder of 8.8e-08.