677707 divided by 91 
The aim is to understand the frequency of 91 in 677707.

Advancing to step 1:
When dividing 6 by 91, we get 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Take the next digit (7) from the dividend and append it to 6, then repeat: 67 / 91

Moving on to step 2:
91 goes into 67 0 times with a remainder of 67.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 67 to get 67.
Fetch the next digit (7) from the dividend, attach it to 67 and continue: 677 / 91

On to step 3:
If we divide 677 by 91, we get 7 and a remainder of 40.
Use 7 as the next digit of our solution. 
Result so far: 7.0
The remainder is 40 after subtracting 637 from 677.
Bring next digit (7) of the dividend behind the 40 and repeat the process: 407 / 91

Going ahead to step 4:
When dividing 407 by 91, we get 4 with a remainder of 43.
Put 4 as the next digit of the answer. 
Result so far: 74.0
The remainder is 43 after subtracting 364 from 407.
Take the next digit (0) from the dividend and append it to 43, then repeat: 430 / 91

On to step 5:
430 divided by 91 is 4 with a remainder of 66.
The next digit of our result is 4. 
Result so far: 744.0
If we subtract 364 from 430, we get 66.
Take the next digit (7) from the dividend and append it to 66, then repeat: 667 / 91

Advancing to step 6:
91 can be fit into 667 7 times, resulting in a remainder of 30.
Record the quotient 7 as the next digit in the result. 
Result so far: 7447.0
Subtract 637 from 667 to 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.

Going ahead to step 7:
91 can be fit into 300 3 times, resulting in a remainder of 27.
Use 3 as the next digit of our solution. 
Result so far: 7447.3
Deduct 273 from 300 and we're left 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.

Step 8:
If we divide 270 by 91, we get 2 and a remainder of 88.
The next digit of our result is 2. 
Result so far: 7447.32
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.

Advancing to step 9:
91 goes into 880 9 times with a remainder of 61.
Use 9 as the next digit of our solution. 
Result so far: 7447.329
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.

On to step 10:
If we divide 610 by 91, we get 6 and a remainder of 64.
Put 6 as the next digit of the answer. 
Result so far: 7447.3296
Subtract 546 from 610 to get 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 11:
If we divide 640 by 91, we get 7 and a remainder of 3.
Use 7 as the next digit of our solution. 
Result so far: 7447.32967
If we subtract 637 from 640, we 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.

Advancing to step 12:
91 can be fit into 30 0 times, resulting in a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 7447.32967
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.

Moving on to step 13:
91 can be fit into 300 3 times, resulting in a remainder of 27.
The next digit of our result is 3. 
Result so far: 7447.3296703
If we take 273 away from 300, we end up 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.

Advancing to step 14:
270 divided by 91 is 2 with a remainder of 88.
The number 2 becomes the next digit in our result. 
Result so far: 7447.32967032
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.

After the division, we end up with 7447.32967032 and a remainder of 8.8e-08.