75057 ÷ 91 
The aim is to understand the frequency of 91 in 75057.

On to step 1:
91 can be fit into 7 0 times, resulting in a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Grab the next digit (5) from the dividend, add it to 7, then carry on: 75 / 91

Let's proceed to step 2:
91 goes into 75 0 times with a remainder of 75.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 75 to get 75.
Take the next digit (0) from the dividend and append it to 75, then repeat: 750 / 91

On to step 3:
91 goes into 750 8 times with a remainder of 22.
Write down 8 as next digit of the result. 
Result so far: 8.0
If we subtract 728 from 750, we get 22.
Take the next digit (5) from the dividend and append it to 22, then repeat: 225 / 91

Advancing to step 4:
225 divided by 91 is 2 with a remainder of 43.
The next digit of our result is 2. 
Result so far: 82.0
If we subtract 182 from 225, we get 43.
Fetch the next digit (7) from the dividend, attach it to 43 and continue: 437 / 91

Advancing to step 5:
91 can be fit into 437 4 times, resulting in a remainder of 73.
The number 4 becomes the next digit in our result. 
Result so far: 824.0
If we subtract 364 from 437, we get 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Moving on to step 6:
If we divide 730 by 91, we get 8 and a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 824.8
Subtracting 728 from 730 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 7:
If we divide 20 by 91, we get 0 and a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 824.8
The remainder is 20 after subtracting 0 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 8:
When dividing 200 by 91, we get 2 with a remainder of 18.
Write down 2 as next digit of the result. 
Result so far: 824.802
If we subtract 182 from 200, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 9:
When dividing 180 by 91, we get 1 with a remainder of 89.
The next digit of our result is 1. 
Result so far: 824.8021
If we take 91 away from 180, we end up with 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

Going ahead to step 10:
The number 91 fits into 890 9 times, leaving a remainder of 71.
Write down 9 as next digit of the result. 
Result so far: 824.80219
If we take 819 away from 890, we end up with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Step 11:
The number 91 fits into 710 7 times, leaving a remainder of 73.
Put 7 as the next digit of the answer. 
Result so far: 824.802197
Deduct 637 from 710 and we're left with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Let's proceed to step 12:
When dividing 730 by 91, we get 8 with a remainder of 2.
The number 8 becomes the next digit in our result. 
Result so far: 824.8021978
Subtract 728 from 730 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 13:
20 divided by 91 is 0 with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 824.8021978
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

After the division, we end up with 824.8021978 and a remainder of 2e-08.