Let's divide 91539421 by 904
The aim is to understand the frequency of 904 in 91539421.

Advancing to step 1:
904 goes into 9 0 times with a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Append the next digit (1) from the dividend to 9 and continue with: 91 / 904

Going ahead to step 2:
If we divide 91 by 904, we get 0 and a remainder of 91.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 91 after subtracting 0 from 91.
Append the next digit (5) from the dividend to 91 and continue with: 915 / 904

On to step 3:
When dividing 915 by 904, we get 1 with a remainder of 11.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 11 after subtracting 904 from 915.
Take the next digit (3) from the dividend and append it to 11, then repeat: 113 / 904

Step 4:
113 divided by 904 is 0 with a remainder of 113.
Write down 0 as next digit of the result. 
Result so far: 10.0
If we take 0 away from 113, we end up with 113.
Append the next digit (9) from the dividend to 113 and continue with: 1139 / 904

Going ahead to step 5:
1139 divided by 904 is 1 with a remainder of 235.
Put 1 as the next digit of the answer. 
Result so far: 101.0
If we subtract 904 from 1139, we get 235.
Take the next digit (4) from the dividend and append it to 235, then repeat: 2354 / 904

Moving on to step 6:
2354 divided by 904 is 2 with a remainder of 546.
Write down 2 as next digit of the result. 
Result so far: 1012.0
If we take 1808 away from 2354, we end up with 546.
Append the next digit (2) from the dividend to 546 and continue with: 5462 / 904

Let's proceed to step 7:
904 goes into 5462 6 times with a remainder of 38.
Record the quotient 6 as the next digit in the result. 
Result so far: 10126.0
If we take 5424 away from 5462, we end up with 38.
Append the next digit (1) from the dividend to 38 and continue with: 381 / 904

On to step 8:
381 divided by 904 is 0 with a remainder of 381.
Write down 0 as next digit of the result. 
Result so far: 101260.0
The remainder is 381 after subtracting 0 from 381.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3810, and continue the process.

Moving on to step 9:
When dividing 3810 by 904, we get 4 with a remainder of 194.
Record the quotient 4 as the next digit in the result. 
Result so far: 101260.4
The remainder is 194 after subtracting 3616 from 3810.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1940, and continue the process.

Going ahead to step 10:
When dividing 1940 by 904, we get 2 with a remainder of 132.
Use 2 as the next digit of our solution. 
Result so far: 101260.42
The remainder is 132 after subtracting 1808 from 1940.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

Step 11:
904 can be fit into 1320 1 times, resulting in a remainder of 416.
The number 1 becomes the next digit in our result. 
Result so far: 101260.421
The remainder is 416 after subtracting 904 from 1320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4160, and continue the process.

Advancing to step 12:
904 goes into 4160 4 times with a remainder of 544.
Put 4 as the next digit of the answer. 
Result so far: 101260.4214
If we subtract 3616 from 4160, we get 544.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5440, and continue the process.

Step 13:
904 goes into 5440 6 times with a remainder of 16.
The next digit of our result is 6. 
Result so far: 101260.42146
The remainder is 16 after subtracting 5424 from 5440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 14:
904 can be fit into 160 0 times, resulting in a remainder of 160.
Write down 0 as next digit of the result. 
Result so far: 101260.42146
If we subtract 0 from 160, we get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Going ahead to step 15:
1600 divided by 904 is 1 with a remainder of 696.
Put 1 as the next digit of the answer. 
Result so far: 101260.4214601
Subtract 904 from 1600 to get 696.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6960, and continue the process.

On to step 16:
6960 divided by 904 is 7 with a remainder of 632.
The next digit of our result is 7. 
Result so far: 101260.42146017
If we take 6328 away from 6960, we end up with 632.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6320, and continue the process.

In conclusion, the division gives 101260.42146017 with a balance of 6.32e-07.