Let's divide 783684 by 91
The aim is to understand the frequency of 91 in 783684.

Moving on to step 1:
The number 91 fits into 7 0 times, leaving a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 91

On to step 2:
91 can be fit into 78 0 times, resulting in a remainder of 78.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 78 to get 78.
Take the next digit (3) from the dividend and append it to 78, then repeat: 783 / 91

Let's proceed to step 3:
91 can be fit into 783 8 times, resulting in a remainder of 55.
Write down 8 as next digit of the result. 
Result so far: 8.0
Subtracting 728 from 783 leaves us with 55.
Take the next digit (6) from the dividend and append it to 55, then repeat: 556 / 91

Advancing to step 4:
When dividing 556 by 91, we get 6 with a remainder of 10.
Put 6 as the next digit of the answer. 
Result so far: 86.0
If we take 546 away from 556, we end up with 10.
Append the next digit (8) from the dividend to 10 and continue with: 108 / 91

Going ahead to step 5:
If we divide 108 by 91, we get 1 and a remainder of 17.
Record the quotient 1 as the next digit in the result. 
Result so far: 861.0
The remainder is 17 after subtracting 91 from 108.
Append the next digit (4) from the dividend to 17 and continue with: 174 / 91

Moving on to step 6:
91 can be fit into 174 1 times, resulting in a remainder of 83.
Put 1 as the next digit of the answer. 
Result so far: 8611.0
If we subtract 91 from 174, we get 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Let's proceed to step 7:
When dividing 830 by 91, we get 9 with a remainder of 11.
Put 9 as the next digit of the answer. 
Result so far: 8611.9
If we subtract 819 from 830, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 8:
91 can be fit into 110 1 times, resulting in a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 8611.91
Deduct 91 from 110 and we're left with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 9:
The number 91 fits into 190 2 times, leaving a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 8611.912
The remainder is 8 after subtracting 182 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 10:
80 divided by 91 is 0 with a remainder of 80.
Use 0 as the next digit of our solution. 
Result so far: 8611.912
Subtract 0 from 80 to get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Moving on to step 11:
The number 91 fits into 800 8 times, leaving a remainder of 72.
The next digit of our result is 8. 
Result so far: 8611.91208
If we take 728 away from 800, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Advancing to step 12:
720 divided by 91 is 7 with a remainder of 83.
Put 7 as the next digit of the answer. 
Result so far: 8611.912087
If we take 637 away from 720, we end up with 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Moving on to step 13:
91 can be fit into 830 9 times, resulting in a remainder of 11.
The next digit of our result is 9. 
Result so far: 8611.9120879
Deduct 819 from 830 and we're left with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 14:
91 goes into 110 1 times with a remainder of 19.
Put 1 as the next digit of the answer. 
Result so far: 8611.91208791
If we take 91 away from 110, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

The quotient of the division is 8611.91208791, and the remainder is 1.9e-08.