We're dividing 698886 by 91 
The aim is to understand the frequency of 91 in 698886.

Advancing to step 1:
The number 91 fits into 6 0 times, leaving a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Append the next digit (9) from the dividend to 6 and continue with: 69 / 91

Let's proceed to step 2:
69 divided by 91 is 0 with a remainder of 69.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 69 to get 69.
Append the next digit (8) from the dividend to 69 and continue with: 698 / 91

Advancing to step 3:
698 divided by 91 is 7 with a remainder of 61.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
The remainder is 61 after subtracting 637 from 698.
Fetch the next digit (8) from the dividend, attach it to 61 and continue: 618 / 91

Let's proceed to step 4:
When dividing 618 by 91, we get 6 with a remainder of 72.
The number 6 becomes the next digit in our result. 
Result so far: 76.0
Subtracting 546 from 618 leaves us with 72.
Bring next digit (8) of the dividend behind the 72 and repeat the process: 728 / 91

On to step 5:
If we divide 728 by 91, we get 8 and a remainder of 0.
Record the quotient 8 as the next digit in the result. 
Result so far: 768.0
Subtract 728 from 728 to get 0.
Bring next digit (6) of the dividend behind the 0 and repeat the process: 6 / 91

Advancing to step 6:
91 can be fit into 6 0 times, resulting in a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 7680.0
Deduct 0 from 6 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 7:
91 goes into 60 0 times with a remainder of 60.
Use 0 as the next digit of our solution. 
Result so far: 7680.0
The remainder is 60 after subtracting 0 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 8:
When dividing 600 by 91, we get 6 with a remainder of 54.
The number 6 becomes the next digit in our result. 
Result so far: 7680.06
Subtract 546 from 600 to get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Going ahead to step 9:
The number 91 fits into 540 5 times, leaving a remainder of 85.
The number 5 becomes the next digit in our result. 
Result so far: 7680.065
If we subtract 455 from 540, we get 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Going ahead to step 10:
The number 91 fits into 850 9 times, leaving a remainder of 31.
Use 9 as the next digit of our solution. 
Result so far: 7680.0659
Subtract 819 from 850 to get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Step 11:
If we divide 310 by 91, we get 3 and a remainder of 37.
Record the quotient 3 as the next digit in the result. 
Result so far: 7680.06593
If we subtract 273 from 310, we get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

On to step 12:
The number 91 fits into 370 4 times, leaving a remainder of 6.
Record the quotient 4 as the next digit in the result. 
Result so far: 7680.065934
Subtract 364 from 370 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 13:
91 can be fit into 60 0 times, resulting in a remainder of 60.
Record the quotient 0 as the next digit in the result. 
Result so far: 7680.065934
Subtract 0 from 60 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 14:
91 goes into 600 6 times with a remainder of 54.
Record the quotient 6 as the next digit in the result. 
Result so far: 7680.06593406
If we subtract 546 from 600, we get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

The final outcome is 7680.06593406, with a leftover of 5.4e-08.