Let's divide 516671 by 91
The aim is to understand the frequency of 91 in 516671.

Moving on to step 1:
91 goes into 5 0 times with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 91

Let's proceed to step 2:
The number 91 fits into 51 0 times, leaving a remainder of 51.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 51 and we're left with 51.
Bring next digit (6) of the dividend behind the 51 and repeat the process: 516 / 91

Moving on to step 3:
If we divide 516 by 91, we get 5 and a remainder of 61.
Put 5 as the next digit of the answer. 
Result so far: 5.0
Deduct 455 from 516 and we're left with 61.
Take the next digit (6) from the dividend and append it to 61, then repeat: 616 / 91

On to step 4:
When dividing 616 by 91, we get 6 with a remainder of 70.
The next digit of our result is 6. 
Result so far: 56.0
Subtracting 546 from 616 leaves us with 70.
Include the next digit (7) from the dividend after 70, then repeat: 707 / 91

Going ahead to step 5:
When dividing 707 by 91, we get 7 with a remainder of 70.
Put 7 as the next digit of the answer. 
Result so far: 567.0
If we take 637 away from 707, we end up with 70.
Append the next digit (1) from the dividend to 70 and continue with: 701 / 91

Advancing to step 6:
If we divide 701 by 91, we get 7 and a remainder of 64.
Put 7 as the next digit of the answer. 
Result so far: 5677.0
The remainder is 64 after subtracting 637 from 701.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Let's proceed to step 7:
When dividing 640 by 91, we get 7 with a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 5677.7
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.

Moving on to step 8:
When dividing 30 by 91, we get 0 with a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 5677.7
If we subtract 0 from 30, we 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.

Step 9:
If we divide 300 by 91, we get 3 and a remainder of 27.
Record the quotient 3 as the next digit in the result. 
Result so far: 5677.703
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.

On to step 10:
91 can be fit into 270 2 times, resulting in a remainder of 88.
Put 2 as the next digit of the answer. 
Result so far: 5677.7032
Subtract 182 from 270 to 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.

Let's proceed to step 11:
The number 91 fits into 880 9 times, leaving a remainder of 61.
Write down 9 as next digit of the result. 
Result so far: 5677.70329
The remainder is 61 after subtracting 819 from 880.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Step 12:
If we divide 610 by 91, we get 6 and a remainder of 64.
Write down 6 as next digit of the result. 
Result so far: 5677.703296
The remainder is 64 after subtracting 546 from 610.
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 13:
640 divided by 91 is 7 with a remainder of 3.
Use 7 as the next digit of our solution. 
Result so far: 5677.7032967
Subtract 637 from 640 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 14:
The number 91 fits into 30 0 times, leaving a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 5677.7032967
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.

Our division results in 5677.7032967 with a remaining 3e-08.