We're dividing 278859 by 19 
The aim is to understand the frequency of 19 in 278859.

Advancing to step 1:
The number 19 fits into 2 0 times, leaving a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Take the next digit (7) from the dividend and append it to 2, then repeat: 27 / 19

Let's proceed to step 2:
19 goes into 27 1 times with a remainder of 8.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 19 from 27 and we're left with 8.
Grab the next digit (8) from the dividend, add it to 8, then carry on: 88 / 19

On to step 3:
19 can be fit into 88 4 times, resulting in a remainder of 12.
Record the quotient 4 as the next digit in the result. 
Result so far: 14.0
Deduct 76 from 88 and we're left with 12.
Take the next digit (8) from the dividend and append it to 12, then repeat: 128 / 19

Moving on to step 4:
19 goes into 128 6 times with a remainder of 14.
The next digit of our result is 6. 
Result so far: 146.0
The remainder is 14 after subtracting 114 from 128.
Take the next digit (5) from the dividend and append it to 14, then repeat: 145 / 19

Let's proceed to step 5:
145 divided by 19 is 7 with a remainder of 12.
The number 7 becomes the next digit in our result. 
Result so far: 1467.0
If we subtract 133 from 145, we get 12.
Fetch the next digit (9) from the dividend, attach it to 12 and continue: 129 / 19

Advancing to step 6:
19 goes into 129 6 times with a remainder of 15.
The next digit of our result is 6. 
Result so far: 14676.0
Deduct 114 from 129 and we're left 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.

Let's proceed to step 7:
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: 14676.7
Deduct 133 from 150 and we're left 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 8:
If we divide 170 by 19, we get 8 and a remainder of 18.
Record the quotient 8 as the next digit in the result. 
Result so far: 14676.78
If we subtract 152 from 170, we get 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 9:
19 can be fit into 180 9 times, resulting in a remainder of 9.
Put 9 as the next digit of the answer. 
Result so far: 14676.789
If we subtract 171 from 180, we get 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 10:
19 can be fit into 90 4 times, resulting in a remainder of 14.
Put 4 as the next digit of the answer. 
Result so far: 14676.7894
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.

Going ahead to step 11:
The number 19 fits into 140 7 times, leaving a remainder of 7.
The number 7 becomes the next digit in our result. 
Result so far: 14676.78947
If we subtract 133 from 140, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Going ahead to step 12:
19 can be fit into 70 3 times, resulting in a remainder of 13.
Put 3 as the next digit of the answer. 
Result so far: 14676.789473
If we take 57 away from 70, we end up 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.

Going ahead to step 13:
If we divide 130 by 19, we get 6 and a remainder of 16.
Record the quotient 6 as the next digit in the result. 
Result so far: 14676.7894736
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.

Advancing to step 14:
19 goes into 160 8 times with a remainder of 8.
The next digit of our result is 8. 
Result so far: 14676.78947368
Deduct 152 from 160 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

After the division, we end up with 14676.78947368 and a remainder of 8e-09.