28077021 divided by 904 
The aim is to understand the frequency of 904 in 28077021.

Let's proceed to step 1:
If we divide 2 by 904, we get 0 and a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Append the next digit (8) from the dividend to 2 and continue with: 28 / 904

Going ahead to step 2:
When dividing 28 by 904, we get 0 with a remainder of 28.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 28 leaves us with 28.
Append the next digit (0) from the dividend to 28 and continue with: 280 / 904

Step 3:
If we divide 280 by 904, we get 0 and a remainder of 280.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 280 to get 280.
Grab the next digit (7) from the dividend, add it to 280, then carry on: 2807 / 904

Going ahead to step 4:
2807 divided by 904 is 3 with a remainder of 95.
Write down 3 as next digit of the result. 
Result so far: 3.0
Subtracting 2712 from 2807 leaves us with 95.
Fetch the next digit (7) from the dividend, attach it to 95 and continue: 957 / 904

Going ahead to step 5:
If we divide 957 by 904, we get 1 and a remainder of 53.
The number 1 becomes the next digit in our result. 
Result so far: 31.0
If we take 904 away from 957, we end up with 53.
Append the next digit (0) from the dividend to 53 and continue with: 530 / 904

On to step 6:
If we divide 530 by 904, we get 0 and a remainder of 530.
Record the quotient 0 as the next digit in the result. 
Result so far: 310.0
Subtract 0 from 530 to get 530.
Include the next digit (2) from the dividend after 530, then repeat: 5302 / 904

Going ahead to step 7:
5302 divided by 904 is 5 with a remainder of 782.
The number 5 becomes the next digit in our result. 
Result so far: 3105.0
Subtract 4520 from 5302 to get 782.
Append the next digit (1) from the dividend to 782 and continue with: 7821 / 904

Advancing to step 8:
904 goes into 7821 8 times with a remainder of 589.
Use 8 as the next digit of our solution. 
Result so far: 31058.0
Deduct 7232 from 7821 and we're left with 589.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5890, and continue the process.

Moving on to step 9:
904 goes into 5890 6 times with a remainder of 466.
Write down 6 as next digit of the result. 
Result so far: 31058.6
Deduct 5424 from 5890 and we're left with 466.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4660, and continue the process.

Advancing to step 10:
When dividing 4660 by 904, we get 5 with a remainder of 140.
Use 5 as the next digit of our solution. 
Result so far: 31058.65
Deduct 4520 from 4660 and we're left with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

On to step 11:
If we divide 1400 by 904, we get 1 and a remainder of 496.
Record the quotient 1 as the next digit in the result. 
Result so far: 31058.651
Deduct 904 from 1400 and we're left with 496.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4960, and continue the process.

On to step 12:
904 goes into 4960 5 times with a remainder of 440.
Use 5 as the next digit of our solution. 
Result so far: 31058.6515
If we take 4520 away from 4960, we end up with 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Step 13:
904 goes into 4400 4 times with a remainder of 784.
Use 4 as the next digit of our solution. 
Result so far: 31058.65154
Deduct 3616 from 4400 and we're left with 784.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7840, and continue the process.

Advancing to step 14:
904 can be fit into 7840 8 times, resulting in a remainder of 608.
Use 8 as the next digit of our solution. 
Result so far: 31058.651548
If we subtract 7232 from 7840, we get 608.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6080, and continue the process.

On to step 15:
When dividing 6080 by 904, we get 6 with a remainder of 656.
The number 6 becomes the next digit in our result. 
Result so far: 31058.6515486
Deduct 5424 from 6080 and we're left with 656.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6560, and continue the process.

Going ahead to step 16:
904 goes into 6560 7 times with a remainder of 232.
The number 7 becomes the next digit in our result. 
Result so far: 31058.65154867
Deduct 6328 from 6560 and we're left with 232.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2320, and continue the process.

After the division, we end up with 31058.65154867 and a remainder of 2.32e-07.