We're dividing 218199 by 91 
The aim is to understand the frequency of 91 in 218199.

Let's proceed to step 1:
When dividing 2 by 91, we get 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 91

Going ahead to step 2:
When dividing 21 by 91, we get 0 with a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 21 to get 21.
Append the next digit (8) from the dividend to 21 and continue with: 218 / 91

Let's proceed to step 3:
If we divide 218 by 91, we get 2 and a remainder of 36.
Write down 2 as next digit of the result. 
Result so far: 2.0
The remainder is 36 after subtracting 182 from 218.
Take the next digit (1) from the dividend and append it to 36, then repeat: 361 / 91

Let's proceed to step 4:
When dividing 361 by 91, we get 3 with a remainder of 88.
Use 3 as the next digit of our solution. 
Result so far: 23.0
Subtracting 273 from 361 leaves us with 88.
Append the next digit (9) from the dividend to 88 and continue with: 889 / 91

Step 5:
889 divided by 91 is 9 with a remainder of 70.
The next digit of our result is 9. 
Result so far: 239.0
If we take 819 away from 889, we end up with 70.
Take the next digit (9) from the dividend and append it to 70, then repeat: 709 / 91

On to step 6:
709 divided by 91 is 7 with a remainder of 72.
The next digit of our result is 7. 
Result so far: 2397.0
Deduct 637 from 709 and we're left 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.

Step 7:
If we divide 720 by 91, we get 7 and a remainder of 83.
Record the quotient 7 as the next digit in the result. 
Result so far: 2397.7
The remainder is 83 after subtracting 637 from 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Advancing to step 8:
91 goes into 830 9 times with a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 2397.79
The remainder is 11 after subtracting 819 from 830.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Going ahead to step 9:
91 can be fit into 110 1 times, resulting in a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 2397.791
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.

Let's proceed to step 10:
91 can be fit into 190 2 times, resulting in a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 2397.7912
Subtract 182 from 190 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 11:
The number 91 fits into 80 0 times, leaving a remainder of 80.
The next digit of our result is 0. 
Result so far: 2397.7912
If we take 0 away from 80, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 12:
91 can be fit into 800 8 times, resulting in a remainder of 72.
Put 8 as the next digit of the answer. 
Result so far: 2397.791208
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.

Going ahead to step 13:
91 goes into 720 7 times with a remainder of 83.
Record the quotient 7 as the next digit in the result. 
Result so far: 2397.7912087
The remainder is 83 after subtracting 637 from 720.
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 14:
91 can be fit into 830 9 times, resulting in a remainder of 11.
Put 9 as the next digit of the answer. 
Result so far: 2397.79120879
The remainder is 11 after subtracting 819 from 830.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

The quotient of the division is 2397.79120879, and the remainder is 1.1e-08.