We're dividing 31883993 by 804 
The aim is to understand the frequency of 804 in 31883993.

Advancing to step 1:
If we divide 3 by 804, we get 0 and a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Grab the next digit (1) from the dividend, add it to 3, then carry on: 31 / 804

Advancing to step 2:
The number 804 fits into 31 0 times, leaving a remainder of 31.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 31 to get 31.
Include the next digit (8) from the dividend after 31, then repeat: 318 / 804

Step 3:
When dividing 318 by 804, we get 0 with a remainder of 318.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 318, we end up with 318.
Bring next digit (8) of the dividend behind the 318 and repeat the process: 3188 / 804

Let's proceed to step 4:
804 can be fit into 3188 3 times, resulting in a remainder of 776.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Deduct 2412 from 3188 and we're left with 776.
Include the next digit (3) from the dividend after 776, then repeat: 7763 / 804

Going ahead to step 5:
804 can be fit into 7763 9 times, resulting in a remainder of 527.
The number 9 becomes the next digit in our result. 
Result so far: 39.0
If we take 7236 away from 7763, we end up with 527.
Include the next digit (9) from the dividend after 527, then repeat: 5279 / 804

Going ahead to step 6:
804 can be fit into 5279 6 times, resulting in a remainder of 455.
Record the quotient 6 as the next digit in the result. 
Result so far: 396.0
The remainder is 455 after subtracting 4824 from 5279.
Take the next digit (9) from the dividend and append it to 455, then repeat: 4559 / 804

On to step 7:
804 can be fit into 4559 5 times, resulting in a remainder of 539.
Write down 5 as next digit of the result. 
Result so far: 3965.0
If we take 4020 away from 4559, we end up with 539.
Fetch the next digit (3) from the dividend, attach it to 539 and continue: 5393 / 804

Let's proceed to step 8:
5393 divided by 804 is 6 with a remainder of 569.
The next digit of our result is 6. 
Result so far: 39656.0
If we subtract 4824 from 5393, we get 569.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5690, and continue the process.

Step 9:
If we divide 5690 by 804, we get 7 and a remainder of 62.
Write down 7 as next digit of the result. 
Result so far: 39656.7
Deduct 5628 from 5690 and we're left with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Moving on to step 10:
804 goes into 620 0 times with a remainder of 620.
The next digit of our result is 0. 
Result so far: 39656.7
If we take 0 away from 620, we end up with 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6200, and continue the process.

On to step 11:
When dividing 6200 by 804, we get 7 with a remainder of 572.
Put 7 as the next digit of the answer. 
Result so far: 39656.707
Subtract 5628 from 6200 to get 572.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5720, and continue the process.

On to step 12:
When dividing 5720 by 804, we get 7 with a remainder of 92.
Put 7 as the next digit of the answer. 
Result so far: 39656.7077
Subtract 5628 from 5720 to get 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

The final outcome is 39656.7077, with a leftover of 0.00092.