816983 divided by 19 
The aim is to understand the frequency of 19 in 816983.

Let's proceed to step 1:
If we divide 8 by 19, we get 0 and a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 19

Let's proceed to step 2:
19 can be fit into 81 4 times, resulting in a remainder of 5.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtract 76 from 81 to get 5.
Fetch the next digit (6) from the dividend, attach it to 5 and continue: 56 / 19

Moving on to step 3:
If we divide 56 by 19, we get 2 and a remainder of 18.
The number 2 becomes the next digit in our result. 
Result so far: 42.0
Deduct 38 from 56 and we're left with 18.
Take the next digit (9) from the dividend and append it to 18, then repeat: 189 / 19

Going ahead to step 4:
19 can be fit into 189 9 times, resulting in a remainder of 18.
The number 9 becomes the next digit in our result. 
Result so far: 429.0
If we subtract 171 from 189, we get 18.
Take the next digit (8) from the dividend and append it to 18, then repeat: 188 / 19

Advancing to step 5:
The number 19 fits into 188 9 times, leaving a remainder of 17.
The number 9 becomes the next digit in our result. 
Result so far: 4299.0
The remainder is 17 after subtracting 171 from 188.
Take the next digit (3) from the dividend and append it to 17, then repeat: 173 / 19

Advancing to step 6:
19 can be fit into 173 9 times, resulting in a remainder of 2.
The next digit of our result is 9. 
Result so far: 42999.0
Subtracting 171 from 173 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 7:
If we divide 20 by 19, we get 1 and a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 42999.1
The remainder is 1 after subtracting 19 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 8:
10 divided by 19 is 0 with a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 42999.1
Deduct 0 from 10 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 9:
If we divide 100 by 19, we get 5 and a remainder of 5.
The next digit of our result is 5. 
Result so far: 42999.105
If we subtract 95 from 100, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 10:
50 divided by 19 is 2 with a remainder of 12.
The number 2 becomes the next digit in our result. 
Result so far: 42999.1052
If we subtract 38 from 50, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 11:
When dividing 120 by 19, we get 6 with a remainder of 6.
Use 6 as the next digit of our solution. 
Result so far: 42999.10526
If we take 114 away from 120, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 12:
60 divided by 19 is 3 with a remainder of 3.
Use 3 as the next digit of our solution. 
Result so far: 42999.105263
Deduct 57 from 60 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 13:
30 divided by 19 is 1 with a remainder of 11.
Use 1 as the next digit of our solution. 
Result so far: 42999.1052631
The remainder is 11 after subtracting 19 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

On to step 14:
19 can be fit into 110 5 times, resulting in a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 42999.10526315
Subtracting 95 from 110 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

The final result is 42999.10526315 with a remainder of 1.5e-08.