We look at the division of 1805894 by 804 
The aim is to understand the frequency of 804 in 1805894.

Step 1:
If we divide 1 by 804, we get 0 and a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 804

Let's proceed to step 2:
The number 804 fits into 18 0 times, leaving a remainder of 18.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 18, we get 18.
Append the next digit (0) from the dividend to 18 and continue with: 180 / 804

On to step 3:
804 goes into 180 0 times with a remainder of 180.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 180 and we're left with 180.
Grab the next digit (5) from the dividend, add it to 180, then carry on: 1805 / 804

On to step 4:
If we divide 1805 by 804, we get 2 and a remainder of 197.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtract 1608 from 1805 to get 197.
Include the next digit (8) from the dividend after 197, then repeat: 1978 / 804

Step 5:
804 can be fit into 1978 2 times, resulting in a remainder of 370.
The next digit of our result is 2. 
Result so far: 22.0
The remainder is 370 after subtracting 1608 from 1978.
Grab the next digit (9) from the dividend, add it to 370, then carry on: 3709 / 804

Advancing to step 6:
If we divide 3709 by 804, we get 4 and a remainder of 493.
Write down 4 as next digit of the result. 
Result so far: 224.0
Subtracting 3216 from 3709 leaves us with 493.
Include the next digit (4) from the dividend after 493, then repeat: 4934 / 804

Advancing to step 7:
The number 804 fits into 4934 6 times, leaving a remainder of 110.
Record the quotient 6 as the next digit in the result. 
Result so far: 2246.0
The remainder is 110 after subtracting 4824 from 4934.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Going ahead to step 8:
If we divide 1100 by 804, we get 1 and a remainder of 296.
Record the quotient 1 as the next digit in the result. 
Result so far: 2246.1
Subtract 804 from 1100 to get 296.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2960, and continue the process.

On to step 9:
804 goes into 2960 3 times with a remainder of 548.
The next digit of our result is 3. 
Result so far: 2246.13
Subtracting 2412 from 2960 leaves us with 548.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5480, and continue the process.

On to step 10:
When dividing 5480 by 804, we get 6 with a remainder of 656.
Record the quotient 6 as the next digit in the result. 
Result so far: 2246.136
If we subtract 4824 from 5480, we get 656.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6560, and continue the process.

Step 11:
When dividing 6560 by 804, we get 8 with a remainder of 128.
Write down 8 as next digit of the result. 
Result so far: 2246.1368
If we take 6432 away from 6560, we end up with 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Moving on to step 12:
1280 divided by 804 is 1 with a remainder of 476.
Write down 1 as next digit of the result. 
Result so far: 2246.13681
Deduct 804 from 1280 and we're left with 476.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4760, and continue the process.

Let's proceed to step 13:
The number 804 fits into 4760 5 times, leaving a remainder of 740.
The next digit of our result is 5. 
Result so far: 2246.136815
The remainder is 740 after subtracting 4020 from 4760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7400, and continue the process.

On to step 14:
804 can be fit into 7400 9 times, resulting in a remainder of 164.
Use 9 as the next digit of our solution. 
Result so far: 2246.1368159
Subtracting 7236 from 7400 leaves us with 164.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

On to step 15:
804 can be fit into 1640 2 times, resulting in a remainder of 32.
Put 2 as the next digit of the answer. 
Result so far: 2246.13681592
Deduct 1608 from 1640 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

The final outcome is 2246.13681592, with a leftover of 3.2e-08.