753945 ÷ 91 
The aim is to understand the frequency of 91 in 753945.

Advancing to step 1:
If we divide 7 by 91, we get 0 and a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Fetch the next digit (5) from the dividend, attach it to 7 and continue: 75 / 91

Let's proceed to step 2:
The number 91 fits into 75 0 times, leaving a remainder of 75.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 75 after subtracting 0 from 75.
Take the next digit (3) from the dividend and append it to 75, then repeat: 753 / 91

On to step 3:
If we divide 753 by 91, we get 8 and a remainder of 25.
Write down 8 as next digit of the result. 
Result so far: 8.0
Deduct 728 from 753 and we're left with 25.
Grab the next digit (9) from the dividend, add it to 25, then carry on: 259 / 91

Going ahead to step 4:
259 divided by 91 is 2 with a remainder of 77.
The number 2 becomes the next digit in our result. 
Result so far: 82.0
If we take 182 away from 259, we end up with 77.
Take the next digit (4) from the dividend and append it to 77, then repeat: 774 / 91

Moving on to step 5:
The number 91 fits into 774 8 times, leaving a remainder of 46.
Record the quotient 8 as the next digit in the result. 
Result so far: 828.0
The remainder is 46 after subtracting 728 from 774.
Append the next digit (5) from the dividend to 46 and continue with: 465 / 91

Moving on to step 6:
When dividing 465 by 91, we get 5 with a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 8285.0
Deduct 455 from 465 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 7:
91 can be fit into 100 1 times, resulting in a remainder of 9.
The next digit of our result is 1. 
Result so far: 8285.1
If we subtract 91 from 100, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 8:
91 can be fit into 90 0 times, resulting in a remainder of 90.
Write down 0 as next digit of the result. 
Result so far: 8285.1
Subtracting 0 from 90 leaves us with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Step 9:
When dividing 900 by 91, we get 9 with a remainder of 81.
Record the quotient 9 as the next digit in the result. 
Result so far: 8285.109
The remainder is 81 after subtracting 819 from 900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Let's proceed to step 10:
91 can be fit into 810 8 times, resulting in a remainder of 82.
Write down 8 as next digit of the result. 
Result so far: 8285.1098
The remainder is 82 after subtracting 728 from 810.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Moving on to step 11:
The number 91 fits into 820 9 times, leaving a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 8285.10989
If we take 819 away from 820, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 12:
When dividing 10 by 91, we get 0 with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 8285.10989
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 13:
If we divide 100 by 91, we get 1 and a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 8285.1098901
If we subtract 91 from 100, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 14:
The number 91 fits into 90 0 times, leaving a remainder of 90.
Use 0 as the next digit of our solution. 
Result so far: 8285.1098901
The remainder is 90 after subtracting 0 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Our division results in 8285.1098901 with a remaining 9e-08.