We're dividing 577465 by 91 
The aim is to understand the frequency of 91 in 577465.

On to step 1:
When dividing 5 by 91, we get 0 with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Fetch the next digit (7) from the dividend, attach it to 5 and continue: 57 / 91

Going ahead to step 2:
91 can be fit into 57 0 times, resulting in a remainder of 57.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 57 and we're left with 57.
Grab the next digit (7) from the dividend, add it to 57, then carry on: 577 / 91

On to step 3:
91 can be fit into 577 6 times, resulting in a remainder of 31.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Deduct 546 from 577 and we're left with 31.
Grab the next digit (4) from the dividend, add it to 31, then carry on: 314 / 91

Let's proceed to step 4:
314 divided by 91 is 3 with a remainder of 41.
Put 3 as the next digit of the answer. 
Result so far: 63.0
Subtracting 273 from 314 leaves us with 41.
Include the next digit (6) from the dividend after 41, then repeat: 416 / 91

Let's proceed to step 5:
If we divide 416 by 91, we get 4 and a remainder of 52.
Write down 4 as next digit of the result. 
Result so far: 634.0
If we subtract 364 from 416, we get 52.
Include the next digit (5) from the dividend after 52, then repeat: 525 / 91

Moving on to step 6:
91 goes into 525 5 times with a remainder of 70.
Record the quotient 5 as the next digit in the result. 
Result so far: 6345.0
Deduct 455 from 525 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

On to step 7:
91 can be fit into 700 7 times, resulting in a remainder of 63.
Use 7 as the next digit of our solution. 
Result so far: 6345.7
If we subtract 637 from 700, we get 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Going ahead to step 8:
The number 91 fits into 630 6 times, leaving a remainder of 84.
Use 6 as the next digit of our solution. 
Result so far: 6345.76
If we subtract 546 from 630, we get 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Let's proceed to step 9:
When dividing 840 by 91, we get 9 with a remainder of 21.
The number 9 becomes the next digit in our result. 
Result so far: 6345.769
The remainder is 21 after subtracting 819 from 840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

On to step 10:
If we divide 210 by 91, we get 2 and a remainder of 28.
Put 2 as the next digit of the answer. 
Result so far: 6345.7692
Subtract 182 from 210 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 11:
When dividing 280 by 91, we get 3 with a remainder of 7.
The next digit of our result is 3. 
Result so far: 6345.76923
If we subtract 273 from 280, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 12:
If we divide 70 by 91, we get 0 and a remainder of 70.
Record the quotient 0 as the next digit in the result. 
Result so far: 6345.76923
Subtracting 0 from 70 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Going ahead to step 13:
700 divided by 91 is 7 with a remainder of 63.
Use 7 as the next digit of our solution. 
Result so far: 6345.7692307
Deduct 637 from 700 and we're left with 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Going ahead to step 14:
When dividing 630 by 91, we get 6 with a remainder of 84.
The next digit of our result is 6. 
Result so far: 6345.76923076
Deduct 546 from 630 and we're left with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

The quotient of the division is 6345.76923076, and the remainder is 8.4e-08.