866246 divided by 19 
The aim is to understand the frequency of 19 in 866246.

Moving on to step 1:
8 divided by 19 is 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Append the next digit (6) from the dividend to 8 and continue with: 86 / 19

Going ahead to step 2:
19 can be fit into 86 4 times, resulting in a remainder of 10.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we subtract 76 from 86, we get 10.
Include the next digit (6) from the dividend after 10, then repeat: 106 / 19

Moving on to step 3:
106 divided by 19 is 5 with a remainder of 11.
Record the quotient 5 as the next digit in the result. 
Result so far: 45.0
The remainder is 11 after subtracting 95 from 106.
Fetch the next digit (2) from the dividend, attach it to 11 and continue: 112 / 19

On to step 4:
19 goes into 112 5 times with a remainder of 17.
Record the quotient 5 as the next digit in the result. 
Result so far: 455.0
If we take 95 away from 112, we end up with 17.
Grab the next digit (4) from the dividend, add it to 17, then carry on: 174 / 19

On to step 5:
19 can be fit into 174 9 times, resulting in a remainder of 3.
Record the quotient 9 as the next digit in the result. 
Result so far: 4559.0
If we subtract 171 from 174, we get 3.
Fetch the next digit (6) from the dividend, attach it to 3 and continue: 36 / 19

On to step 6:
If we divide 36 by 19, we get 1 and a remainder of 17.
The next digit of our result is 1. 
Result so far: 45591.0
Deduct 19 from 36 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.

Step 7:
170 divided by 19 is 8 with a remainder of 18.
Put 8 as the next digit of the answer. 
Result so far: 45591.8
Deduct 152 from 170 and we're left 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.

Going ahead to step 8:
When dividing 180 by 19, we get 9 with a remainder of 9.
The next digit of our result is 9. 
Result so far: 45591.89
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.

Moving on to step 9:
19 goes into 90 4 times with a remainder of 14.
The next digit of our result is 4. 
Result so far: 45591.894
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.

On to step 10:
19 can be fit into 140 7 times, resulting in a remainder of 7.
The number 7 becomes the next digit in our result. 
Result so far: 45591.8947
Subtracting 133 from 140 leaves us 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.

On to step 11:
When dividing 70 by 19, we get 3 with a remainder of 13.
Put 3 as the next digit of the answer. 
Result so far: 45591.89473
Subtract 57 from 70 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Step 12:
If we divide 130 by 19, we get 6 and a remainder of 16.
Use 6 as the next digit of our solution. 
Result so far: 45591.894736
The remainder is 16 after subtracting 114 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 13:
19 goes into 160 8 times with a remainder of 8.
Use 8 as the next digit of our solution. 
Result so far: 45591.8947368
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.

Moving on to step 14:
19 goes into 80 4 times with a remainder of 4.
The next digit of our result is 4. 
Result so far: 45591.89473684
If we subtract 76 from 80, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Our division results in 45591.89473684 with a remaining 4e-09.