We look at the division of 790866 by 19 
The aim is to understand the frequency of 19 in 790866.

Advancing to step 1:
19 goes into 7 0 times with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Grab the next digit (9) from the dividend, add it to 7, then carry on: 79 / 19

Going ahead to step 2:
79 divided by 19 is 4 with a remainder of 3.
Use 4 as the next digit of our solution. 
Result so far: 4.0
If we subtract 76 from 79, we get 3.
Include the next digit (0) from the dividend after 3, then repeat: 30 / 19

On to step 3:
19 can be fit into 30 1 times, resulting in a remainder of 11.
Record the quotient 1 as the next digit in the result. 
Result so far: 41.0
Deduct 19 from 30 and we're left with 11.
Include the next digit (8) from the dividend after 11, then repeat: 118 / 19

Moving on to step 4:
19 can be fit into 118 6 times, resulting in a remainder of 4.
Use 6 as the next digit of our solution. 
Result so far: 416.0
If we subtract 114 from 118, we get 4.
Take the next digit (6) from the dividend and append it to 4, then repeat: 46 / 19

Moving on to step 5:
When dividing 46 by 19, we get 2 with a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 4162.0
Subtracting 38 from 46 leaves us with 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 19

Going ahead to step 6:
The number 19 fits into 86 4 times, leaving a remainder of 10.
Write down 4 as next digit of the result. 
Result so far: 41624.0
The remainder is 10 after subtracting 76 from 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 7:
19 can be fit into 100 5 times, resulting in a remainder of 5.
The next digit of our result is 5. 
Result so far: 41624.5
If we take 95 away from 100, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 8:
When dividing 50 by 19, we get 2 with a remainder of 12.
The next digit of our result is 2. 
Result so far: 41624.52
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.

Moving on to step 9:
If we divide 120 by 19, we get 6 and a remainder of 6.
Use 6 as the next digit of our solution. 
Result so far: 41624.526
If we subtract 114 from 120, we get 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 10:
60 divided by 19 is 3 with a remainder of 3.
The number 3 becomes the next digit in our result. 
Result so far: 41624.5263
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.

Let's proceed to step 11:
19 can be fit into 30 1 times, resulting in a remainder of 11.
Record the quotient 1 as the next digit in the result. 
Result so far: 41624.52631
If we subtract 19 from 30, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 12:
110 divided by 19 is 5 with a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 41624.526315
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.

Moving on to step 13:
19 goes into 150 7 times with a remainder of 17.
The number 7 becomes the next digit in our result. 
Result so far: 41624.5263157
The remainder is 17 after subtracting 133 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 14:
The number 19 fits into 170 8 times, leaving a remainder of 18.
Record the quotient 8 as the next digit in the result. 
Result so far: 41624.52631578
The remainder is 18 after subtracting 152 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

The final outcome is 41624.52631578, with a leftover of 1.8e-08.