We look at the division of 31889434 by 813 
The aim is to understand the frequency of 813 in 31889434.

Step 1:
3 divided by 813 is 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Fetch the next digit (1) from the dividend, attach it to 3 and continue: 31 / 813

Going ahead to step 2:
The number 813 fits into 31 0 times, leaving a remainder of 31.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 31 to get 31.
Grab the next digit (8) from the dividend, add it to 31, then carry on: 318 / 813

Let's proceed to step 3:
When dividing 318 by 813, we get 0 with a remainder of 318.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 318 to get 318.
Grab the next digit (8) from the dividend, add it to 318, then carry on: 3188 / 813

Let's proceed to step 4:
813 can be fit into 3188 3 times, resulting in a remainder of 749.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtract 2439 from 3188 to get 749.
Bring next digit (9) of the dividend behind the 749 and repeat the process: 7499 / 813

Let's proceed to step 5:
If we divide 7499 by 813, we get 9 and a remainder of 182.
Record the quotient 9 as the next digit in the result. 
Result so far: 39.0
Deduct 7317 from 7499 and we're left with 182.
Grab the next digit (4) from the dividend, add it to 182, then carry on: 1824 / 813

Moving on to step 6:
When dividing 1824 by 813, we get 2 with a remainder of 198.
Record the quotient 2 as the next digit in the result. 
Result so far: 392.0
If we take 1626 away from 1824, we end up with 198.
Include the next digit (3) from the dividend after 198, then repeat: 1983 / 813

Let's proceed to step 7:
When dividing 1983 by 813, we get 2 with a remainder of 357.
The next digit of our result is 2. 
Result so far: 3922.0
The remainder is 357 after subtracting 1626 from 1983.
Bring next digit (4) of the dividend behind the 357 and repeat the process: 3574 / 813

On to step 8:
3574 divided by 813 is 4 with a remainder of 322.
The next digit of our result is 4. 
Result so far: 39224.0
Subtract 3252 from 3574 to get 322.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3220, and continue the process.

Moving on to step 9:
3220 divided by 813 is 3 with a remainder of 781.
Write down 3 as next digit of the result. 
Result so far: 39224.3
Subtracting 2439 from 3220 leaves us with 781.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7810, and continue the process.

Moving on to step 10:
When dividing 7810 by 813, we get 9 with a remainder of 493.
Record the quotient 9 as the next digit in the result. 
Result so far: 39224.39
Subtracting 7317 from 7810 leaves us with 493.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4930, and continue the process.

On to step 11:
813 can be fit into 4930 6 times, resulting in a remainder of 52.
Use 6 as the next digit of our solution. 
Result so far: 39224.396
If we subtract 4878 from 4930, we get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Let's proceed to step 12:
813 goes into 520 0 times with a remainder of 520.
The next digit of our result is 0. 
Result so far: 39224.396
If we take 0 away from 520, we end up with 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

Going ahead to step 13:
If we divide 5200 by 813, we get 6 and a remainder of 322.
Record the quotient 6 as the next digit in the result. 
Result so far: 39224.39606
If we subtract 4878 from 5200, we get 322.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3220, and continue the process.

Advancing to step 14:
3220 divided by 813 is 3 with a remainder of 781.
Record the quotient 3 as the next digit in the result. 
Result so far: 39224.396063
If we take 2439 away from 3220, we end up with 781.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7810, and continue the process.

Step 15:
If we divide 7810 by 813, we get 9 and a remainder of 493.
Write down 9 as next digit of the result. 
Result so far: 39224.3960639
Subtracting 7317 from 7810 leaves us with 493.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4930, and continue the process.

On to step 16:
813 goes into 4930 6 times with a remainder of 52.
Write down 6 as next digit of the result. 
Result so far: 39224.39606396
If we take 4878 away from 4930, we end up with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

The final outcome is 39224.39606396, with a leftover of 5.2e-08.