We're dividing 470861 by 91 
The aim is to understand the frequency of 91 in 470861.

On to step 1:
When dividing 4 by 91, we get 0 with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Bring next digit (7) of the dividend behind the 4 and repeat the process: 47 / 91

Advancing to step 2:
91 goes into 47 0 times with a remainder of 47.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 47 and we're left with 47.
Append the next digit (0) from the dividend to 47 and continue with: 470 / 91

On to step 3:
91 goes into 470 5 times with a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Subtract 455 from 470 to get 15.
Grab the next digit (8) from the dividend, add it to 15, then carry on: 158 / 91

On to step 4:
If we divide 158 by 91, we get 1 and a remainder of 67.
Use 1 as the next digit of our solution. 
Result so far: 51.0
Subtracting 91 from 158 leaves us with 67.
Take the next digit (6) from the dividend and append it to 67, then repeat: 676 / 91

Step 5:
The number 91 fits into 676 7 times, leaving a remainder of 39.
The next digit of our result is 7. 
Result so far: 517.0
The remainder is 39 after subtracting 637 from 676.
Bring next digit (1) of the dividend behind the 39 and repeat the process: 391 / 91

Step 6:
91 can be fit into 391 4 times, resulting in a remainder of 27.
Write down 4 as next digit of the result. 
Result so far: 5174.0
If we subtract 364 from 391, we 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.

On to step 7:
91 goes into 270 2 times with a remainder of 88.
Record the quotient 2 as the next digit in the result. 
Result so far: 5174.2
If we subtract 182 from 270, we get 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Moving on to step 8:
91 goes into 880 9 times with a remainder of 61.
Put 9 as the next digit of the answer. 
Result so far: 5174.29
Subtracting 819 from 880 leaves us with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Moving on to step 9:
91 goes into 610 6 times with a remainder of 64.
Put 6 as the next digit of the answer. 
Result so far: 5174.296
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.

Step 10:
91 can be fit into 640 7 times, resulting in a remainder of 3.
Write down 7 as next digit of the result. 
Result so far: 5174.2967
The remainder is 3 after subtracting 637 from 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 11:
91 goes into 30 0 times with a remainder of 30.
The next digit of our result is 0. 
Result so far: 5174.2967
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.

Advancing to step 12:
300 divided by 91 is 3 with a remainder of 27.
The number 3 becomes the next digit in our result. 
Result so far: 5174.296703
Subtracting 273 from 300 leaves us 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.

Going ahead to step 13:
270 divided by 91 is 2 with a remainder of 88.
Put 2 as the next digit of the answer. 
Result so far: 5174.2967032
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.

Advancing to step 14:
If we divide 880 by 91, we get 9 and a remainder of 61.
Write down 9 as next digit of the result. 
Result so far: 5174.29670329
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.

After the division, we end up with 5174.29670329 and a remainder of 6.1e-08.