We look at the division of 819708 by 19 
The aim is to understand the frequency of 19 in 819708.

Going ahead to step 1:
If we divide 8 by 19, we get 0 and a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Grab the next digit (1) from the dividend, add it to 8, then carry on: 81 / 19

Step 2:
If we divide 81 by 19, we get 4 and a remainder of 5.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
If we subtract 76 from 81, we get 5.
Take the next digit (9) from the dividend and append it to 5, then repeat: 59 / 19

Moving on to step 3:
19 can be fit into 59 3 times, resulting in a remainder of 2.
Put 3 as the next digit of the answer. 
Result so far: 43.0
Subtracting 57 from 59 leaves us with 2.
Bring next digit (7) of the dividend behind the 2 and repeat the process: 27 / 19

Advancing to step 4:
If we divide 27 by 19, we get 1 and a remainder of 8.
Record the quotient 1 as the next digit in the result. 
Result so far: 431.0
The remainder is 8 after subtracting 19 from 27.
Fetch the next digit (0) from the dividend, attach it to 8 and continue: 80 / 19

Going ahead to step 5:
80 divided by 19 is 4 with a remainder of 4.
Record the quotient 4 as the next digit in the result. 
Result so far: 4314.0
Deduct 76 from 80 and we're left with 4.
Take the next digit (8) from the dividend and append it to 4, then repeat: 48 / 19

Moving on to step 6:
19 goes into 48 2 times with a remainder of 10.
The next digit of our result is 2. 
Result so far: 43142.0
Deduct 38 from 48 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.

On to step 7:
19 goes into 100 5 times with a remainder of 5.
The next digit of our result is 5. 
Result so far: 43142.5
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.

Step 8:
50 divided by 19 is 2 with a remainder of 12.
The number 2 becomes the next digit in our result. 
Result so far: 43142.52
The remainder is 12 after subtracting 38 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 9:
The number 19 fits into 120 6 times, leaving a remainder of 6.
Use 6 as the next digit of our solution. 
Result so far: 43142.526
The remainder is 6 after subtracting 114 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 10:
The number 19 fits into 60 3 times, leaving a remainder of 3.
Record the quotient 3 as the next digit in the result. 
Result so far: 43142.5263
The remainder is 3 after subtracting 57 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 11:
If we divide 30 by 19, we get 1 and a remainder of 11.
Write down 1 as next digit of the result. 
Result so far: 43142.52631
Deduct 19 from 30 and we're left with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Going ahead to step 12:
19 can be fit into 110 5 times, resulting in a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 43142.526315
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.

On to step 13:
The number 19 fits into 150 7 times, leaving a remainder of 17.
Use 7 as the next digit of our solution. 
Result so far: 43142.5263157
If we subtract 133 from 150, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 14:
If we divide 170 by 19, we get 8 and a remainder of 18.
Put 8 as the next digit of the answer. 
Result so far: 43142.52631578
Subtracting 152 from 170 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

After the division, we end up with 43142.52631578 and a remainder of 1.8e-08.