We look at the division of 426713 by 19 
The aim is to understand the frequency of 19 in 426713.

On to step 1:
When dividing 4 by 19, we get 0 with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Include the next digit (2) from the dividend after 4, then repeat: 42 / 19

On to step 2:
42 divided by 19 is 2 with a remainder of 4.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 38 from 42 and we're left with 4.
Include the next digit (6) from the dividend after 4, then repeat: 46 / 19

On to step 3:
19 can be fit into 46 2 times, resulting in a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 22.0
Deduct 38 from 46 and we're left with 8.
Append the next digit (7) from the dividend to 8 and continue with: 87 / 19

Going ahead to step 4:
The number 19 fits into 87 4 times, leaving a remainder of 11.
Put 4 as the next digit of the answer. 
Result so far: 224.0
Deduct 76 from 87 and we're left with 11.
Bring next digit (1) of the dividend behind the 11 and repeat the process: 111 / 19

Step 5:
19 can be fit into 111 5 times, resulting in a remainder of 16.
Put 5 as the next digit of the answer. 
Result so far: 2245.0
Subtracting 95 from 111 leaves us with 16.
Bring next digit (3) of the dividend behind the 16 and repeat the process: 163 / 19

On to step 6:
19 can be fit into 163 8 times, resulting in a remainder of 11.
Use 8 as the next digit of our solution. 
Result so far: 22458.0
Subtracting 152 from 163 leaves us 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.

Let's proceed to step 7:
110 divided by 19 is 5 with a remainder of 15.
Write down 5 as next digit of the result. 
Result so far: 22458.5
Subtract 95 from 110 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 8:
If we divide 150 by 19, we get 7 and a remainder of 17.
Put 7 as the next digit of the answer. 
Result so far: 22458.57
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.

On to step 9:
The number 19 fits into 170 8 times, leaving a remainder of 18.
The number 8 becomes the next digit in our result. 
Result so far: 22458.578
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.

Advancing to step 10:
19 goes into 180 9 times with a remainder of 9.
Use 9 as the next digit of our solution. 
Result so far: 22458.5789
If we take 171 away from 180, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 11:
19 goes into 90 4 times with a remainder of 14.
Record the quotient 4 as the next digit in the result. 
Result so far: 22458.57894
Deduct 76 from 90 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 12:
The number 19 fits into 140 7 times, leaving a remainder of 7.
Use 7 as the next digit of our solution. 
Result so far: 22458.578947
Deduct 133 from 140 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 13:
19 goes into 70 3 times with a remainder of 13.
Use 3 as the next digit of our solution. 
Result so far: 22458.5789473
Subtracting 57 from 70 leaves us with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 14:
If we divide 130 by 19, we get 6 and a remainder of 16.
Write down 6 as next digit of the result. 
Result so far: 22458.57894736
Subtracting 114 from 130 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

In conclusion, the division gives 22458.57894736 with a balance of 1.6e-08.