We're dividing 548559 by 19 
The aim is to understand the frequency of 19 in 548559.

Going ahead to step 1:
If we divide 5 by 19, we get 0 and a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Include the next digit (4) from the dividend after 5, then repeat: 54 / 19

Step 2:
When dividing 54 by 19, we get 2 with a remainder of 16.
The next digit of our result is 2. 
Result so far: 2.0
If we subtract 38 from 54, we get 16.
Append the next digit (8) from the dividend to 16 and continue with: 168 / 19

On to step 3:
The number 19 fits into 168 8 times, leaving a remainder of 16.
Record the quotient 8 as the next digit in the result. 
Result so far: 28.0
Subtracting 152 from 168 leaves us with 16.
Bring next digit (5) of the dividend behind the 16 and repeat the process: 165 / 19

Step 4:
19 goes into 165 8 times with a remainder of 13.
The next digit of our result is 8. 
Result so far: 288.0
Deduct 152 from 165 and we're left with 13.
Take the next digit (5) from the dividend and append it to 13, then repeat: 135 / 19

Let's proceed to step 5:
135 divided by 19 is 7 with a remainder of 2.
The number 7 becomes the next digit in our result. 
Result so far: 2887.0
Subtracting 133 from 135 leaves us with 2.
Grab the next digit (9) from the dividend, add it to 2, then carry on: 29 / 19

Step 6:
The number 19 fits into 29 1 times, leaving a remainder of 10.
Record the quotient 1 as the next digit in the result. 
Result so far: 28871.0
If we take 19 away from 29, we end up 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.

Advancing to step 7:
If we divide 100 by 19, we get 5 and a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 28871.5
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.

Let's proceed to step 8:
19 goes into 50 2 times with a remainder of 12.
The next digit of our result is 2. 
Result so far: 28871.52
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.

Step 9:
The number 19 fits into 120 6 times, leaving a remainder of 6.
Put 6 as the next digit of the answer. 
Result so far: 28871.526
Deduct 114 from 120 and we're left 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.

Let's proceed to step 10:
19 goes into 60 3 times with a remainder of 3.
Write down 3 as next digit of the result. 
Result so far: 28871.5263
If we subtract 57 from 60, we get 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 11:
If we divide 30 by 19, we get 1 and a remainder of 11.
The number 1 becomes the next digit in our result. 
Result so far: 28871.52631
Subtracting 19 from 30 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.

Step 12:
The number 19 fits into 110 5 times, leaving a remainder of 15.
The next digit of our result is 5. 
Result so far: 28871.526315
If we subtract 95 from 110, we 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.

Advancing to step 13:
If we divide 150 by 19, we get 7 and a remainder of 17.
Write down 7 as next digit of the result. 
Result so far: 28871.5263157
If we take 133 away from 150, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Going ahead to step 14:
19 can be fit into 170 8 times, resulting in a remainder of 18.
Write down 8 as next digit of the result. 
Result so far: 28871.52631578
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.

The final result is 28871.52631578 with a remainder of 1.8e-08.