We're dividing 398467 by 91 
The aim is to understand the frequency of 91 in 398467.

Moving on to step 1:
3 divided by 91 is 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 91

Let's proceed to step 2:
When dividing 39 by 91, we get 0 with a remainder of 39.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 39, we get 39.
Append the next digit (8) from the dividend to 39 and continue with: 398 / 91

Step 3:
The number 91 fits into 398 4 times, leaving a remainder of 34.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we take 364 away from 398, we end up with 34.
Grab the next digit (4) from the dividend, add it to 34, then carry on: 344 / 91

Step 4:
91 goes into 344 3 times with a remainder of 71.
Put 3 as the next digit of the answer. 
Result so far: 43.0
The remainder is 71 after subtracting 273 from 344.
Fetch the next digit (6) from the dividend, attach it to 71 and continue: 716 / 91

Let's proceed to step 5:
If we divide 716 by 91, we get 7 and a remainder of 79.
Write down 7 as next digit of the result. 
Result so far: 437.0
Subtract 637 from 716 to get 79.
Bring next digit (7) of the dividend behind the 79 and repeat the process: 797 / 91

Let's proceed to step 6:
The number 91 fits into 797 8 times, leaving a remainder of 69.
Write down 8 as next digit of the result. 
Result so far: 4378.0
The remainder is 69 after subtracting 728 from 797.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Moving on to step 7:
91 can be fit into 690 7 times, resulting in a remainder of 53.
Use 7 as the next digit of our solution. 
Result so far: 4378.7
If we subtract 637 from 690, we get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Advancing to step 8:
530 divided by 91 is 5 with a remainder of 75.
Write down 5 as next digit of the result. 
Result so far: 4378.75
The remainder is 75 after subtracting 455 from 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Going ahead to step 9:
91 goes into 750 8 times with a remainder of 22.
The number 8 becomes the next digit in our result. 
Result so far: 4378.758
If we take 728 away from 750, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 10:
The number 91 fits into 220 2 times, leaving a remainder of 38.
Record the quotient 2 as the next digit in the result. 
Result so far: 4378.7582
Deduct 182 from 220 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 11:
The number 91 fits into 380 4 times, leaving a remainder of 16.
The next digit of our result is 4. 
Result so far: 4378.75824
Subtracting 364 from 380 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 12:
91 can be fit into 160 1 times, resulting in a remainder of 69.
Record the quotient 1 as the next digit in the result. 
Result so far: 4378.758241
The remainder is 69 after subtracting 91 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Advancing to step 13:
When dividing 690 by 91, we get 7 with a remainder of 53.
The number 7 becomes the next digit in our result. 
Result so far: 4378.7582417
Deduct 637 from 690 and we're left with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Moving on to step 14:
530 divided by 91 is 5 with a remainder of 75.
Put 5 as the next digit of the answer. 
Result so far: 4378.75824175
Subtract 455 from 530 to get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

In conclusion, the division gives 4378.75824175 with a balance of 7.5e-08.