Let's divide 3080904 by 804
The aim is to understand the frequency of 804 in 3080904.

Step 1:
If we divide 3 by 804, we get 0 and a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Include the next digit (0) from the dividend after 3, then repeat: 30 / 804

Going ahead to step 2:
The number 804 fits into 30 0 times, leaving a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 30 after subtracting 0 from 30.
Fetch the next digit (8) from the dividend, attach it to 30 and continue: 308 / 804

On to step 3:
308 divided by 804 is 0 with a remainder of 308.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 308 leaves us with 308.
Take the next digit (0) from the dividend and append it to 308, then repeat: 3080 / 804

On to step 4:
When dividing 3080 by 804, we get 3 with a remainder of 668.
The next digit of our result is 3. 
Result so far: 3.0
Deduct 2412 from 3080 and we're left with 668.
Take the next digit (9) from the dividend and append it to 668, then repeat: 6689 / 804

Going ahead to step 5:
When dividing 6689 by 804, we get 8 with a remainder of 257.
Put 8 as the next digit of the answer. 
Result so far: 38.0
Subtract 6432 from 6689 to get 257.
Append the next digit (0) from the dividend to 257 and continue with: 2570 / 804

Let's proceed to step 6:
2570 divided by 804 is 3 with a remainder of 158.
Write down 3 as next digit of the result. 
Result so far: 383.0
Deduct 2412 from 2570 and we're left with 158.
Append the next digit (4) from the dividend to 158 and continue with: 1584 / 804

Going ahead to step 7:
When dividing 1584 by 804, we get 1 with a remainder of 780.
The next digit of our result is 1. 
Result so far: 3831.0
If we take 804 away from 1584, we end up with 780.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7800, and continue the process.

Let's proceed to step 8:
If we divide 7800 by 804, we get 9 and a remainder of 564.
The next digit of our result is 9. 
Result so far: 3831.9
The remainder is 564 after subtracting 7236 from 7800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5640, and continue the process.

Let's proceed to step 9:
The number 804 fits into 5640 7 times, leaving a remainder of 12.
Record the quotient 7 as the next digit in the result. 
Result so far: 3831.97
The remainder is 12 after subtracting 5628 from 5640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 10:
If we divide 120 by 804, we get 0 and a remainder of 120.
The number 0 becomes the next digit in our result. 
Result so far: 3831.97
Subtract 0 from 120 to get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Advancing to step 11:
If we divide 1200 by 804, we get 1 and a remainder of 396.
The next digit of our result is 1. 
Result so far: 3831.9701
Subtracting 804 from 1200 leaves us with 396.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3960, and continue the process.

Advancing to step 12:
When dividing 3960 by 804, we get 4 with a remainder of 744.
Record the quotient 4 as the next digit in the result. 
Result so far: 3831.97014
Deduct 3216 from 3960 and we're left with 744.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7440, and continue the process.

Step 13:
804 can be fit into 7440 9 times, resulting in a remainder of 204.
The number 9 becomes the next digit in our result. 
Result so far: 3831.970149
If we take 7236 away from 7440, we end up with 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

On to step 14:
If we divide 2040 by 804, we get 2 and a remainder of 432.
Use 2 as the next digit of our solution. 
Result so far: 3831.9701492
If we take 1608 away from 2040, we end up with 432.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4320, and continue the process.

Moving on to step 15:
When dividing 4320 by 804, we get 5 with a remainder of 300.
Write down 5 as next digit of the result. 
Result so far: 3831.97014925
If we subtract 4020 from 4320, we get 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

The quotient of the division is 3831.97014925, and the remainder is 3e-07.