We're dividing 986615 by 91 
The aim is to understand the frequency of 91 in 986615.

Moving on to step 1:
The number 91 fits into 9 0 times, leaving a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Bring next digit (8) of the dividend behind the 9 and repeat the process: 98 / 91

Going ahead to step 2:
The number 91 fits into 98 1 times, leaving a remainder of 7.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 91 from 98 leaves us with 7.
Take the next digit (6) from the dividend and append it to 7, then repeat: 76 / 91

Advancing to step 3:
If we divide 76 by 91, we get 0 and a remainder of 76.
Use 0 as the next digit of our solution. 
Result so far: 10.0
If we take 0 away from 76, we end up with 76.
Grab the next digit (6) from the dividend, add it to 76, then carry on: 766 / 91

Going ahead to step 4:
The number 91 fits into 766 8 times, leaving a remainder of 38.
The next digit of our result is 8. 
Result so far: 108.0
If we take 728 away from 766, we end up with 38.
Take the next digit (1) from the dividend and append it to 38, then repeat: 381 / 91

Step 5:
381 divided by 91 is 4 with a remainder of 17.
The number 4 becomes the next digit in our result. 
Result so far: 1084.0
Subtracting 364 from 381 leaves us with 17.
Bring next digit (5) of the dividend behind the 17 and repeat the process: 175 / 91

On to step 6:
175 divided by 91 is 1 with a remainder of 84.
The number 1 becomes the next digit in our result. 
Result so far: 10841.0
Deduct 91 from 175 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.

Going ahead to step 7:
91 can be fit into 840 9 times, resulting in a remainder of 21.
Record the quotient 9 as the next digit in the result. 
Result so far: 10841.9
Subtract 819 from 840 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Advancing to step 8:
210 divided by 91 is 2 with a remainder of 28.
Write down 2 as next digit of the result. 
Result so far: 10841.92
The remainder is 28 after subtracting 182 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 9:
280 divided by 91 is 3 with a remainder of 7.
Use 3 as the next digit of our solution. 
Result so far: 10841.923
If we take 273 away from 280, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 10:
70 divided by 91 is 0 with a remainder of 70.
The next digit of our result is 0. 
Result so far: 10841.923
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.

Let's proceed to step 11:
When dividing 700 by 91, we get 7 with a remainder of 63.
Put 7 as the next digit of the answer. 
Result so far: 10841.92307
Subtracting 637 from 700 leaves us 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.

Moving on to step 12:
The number 91 fits into 630 6 times, leaving a remainder of 84.
The next digit of our result is 6. 
Result so far: 10841.923076
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.

Moving on to step 13:
91 can be fit into 840 9 times, resulting in a remainder of 21.
The next digit of our result is 9. 
Result so far: 10841.9230769
Subtracting 819 from 840 leaves us with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Step 14:
91 can be fit into 210 2 times, resulting in a remainder of 28.
Put 2 as the next digit of the answer. 
Result so far: 10841.92307692
Subtracting 182 from 210 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

After the division, we end up with 10841.92307692 and a remainder of 2.8e-08.