We look at the division of 91371699 by 404 
The aim is to understand the frequency of 404 in 91371699.

Going ahead to step 1:
404 can be fit into 9 0 times, resulting in a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Include the next digit (1) from the dividend after 9, then repeat: 91 / 404

Step 2:
404 goes into 91 0 times with a remainder of 91.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 91 leaves us with 91.
Bring next digit (3) of the dividend behind the 91 and repeat the process: 913 / 404

On to step 3:
If we divide 913 by 404, we get 2 and a remainder of 105.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtracting 808 from 913 leaves us with 105.
Include the next digit (7) from the dividend after 105, then repeat: 1057 / 404

Step 4:
404 goes into 1057 2 times with a remainder of 249.
Put 2 as the next digit of the answer. 
Result so far: 22.0
The remainder is 249 after subtracting 808 from 1057.
Bring next digit (1) of the dividend behind the 249 and repeat the process: 2491 / 404

Advancing to step 5:
The number 404 fits into 2491 6 times, leaving a remainder of 67.
Use 6 as the next digit of our solution. 
Result so far: 226.0
The remainder is 67 after subtracting 2424 from 2491.
Fetch the next digit (6) from the dividend, attach it to 67 and continue: 676 / 404

Let's proceed to step 6:
404 can be fit into 676 1 times, resulting in a remainder of 272.
The number 1 becomes the next digit in our result. 
Result so far: 2261.0
If we take 404 away from 676, we end up with 272.
Take the next digit (9) from the dividend and append it to 272, then repeat: 2729 / 404

On to step 7:
2729 divided by 404 is 6 with a remainder of 305.
Put 6 as the next digit of the answer. 
Result so far: 22616.0
Subtracting 2424 from 2729 leaves us with 305.
Include the next digit (9) from the dividend after 305, then repeat: 3059 / 404

Let's proceed to step 8:
404 goes into 3059 7 times with a remainder of 231.
The number 7 becomes the next digit in our result. 
Result so far: 226167.0
The remainder is 231 after subtracting 2828 from 3059.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2310, and continue the process.

Going ahead to step 9:
When dividing 2310 by 404, we get 5 with a remainder of 290.
The next digit of our result is 5. 
Result so far: 226167.5
Deduct 2020 from 2310 and we're left with 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Step 10:
The number 404 fits into 2900 7 times, leaving a remainder of 72.
The number 7 becomes the next digit in our result. 
Result so far: 226167.57
Subtracting 2828 from 2900 leaves us 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.

Let's proceed to step 11:
The number 404 fits into 720 1 times, leaving a remainder of 316.
Write down 1 as next digit of the result. 
Result so far: 226167.571
The remainder is 316 after subtracting 404 from 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

Advancing to step 12:
404 can be fit into 3160 7 times, resulting in a remainder of 332.
Put 7 as the next digit of the answer. 
Result so far: 226167.5717
If we take 2828 away from 3160, we end up with 332.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3320, and continue the process.

Moving on to step 13:
404 goes into 3320 8 times with a remainder of 88.
The number 8 becomes the next digit in our result. 
Result so far: 226167.57178
If we subtract 3232 from 3320, we get 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Let's proceed to step 14:
The number 404 fits into 880 2 times, leaving a remainder of 72.
The number 2 becomes the next digit in our result. 
Result so far: 226167.571782
Subtracting 808 from 880 leaves us 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.

Let's proceed to step 15:
If we divide 720 by 404, we get 1 and a remainder of 316.
The next digit of our result is 1. 
Result so far: 226167.5717821
Subtract 404 from 720 to get 316.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

Going ahead to step 16:
If we divide 3160 by 404, we get 7 and a remainder of 332.
Write down 7 as next digit of the result. 
Result so far: 226167.57178217
If we take 2828 away from 3160, we end up with 332.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3320, and continue the process.

The final outcome is 226167.57178217, with a leftover of 3.32e-07.