800857 ÷ 19 
The aim is to understand the frequency of 19 in 800857.

Let's proceed to step 1:
If we divide 8 by 19, we get 0 and a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Include the next digit (0) from the dividend after 8, then repeat: 80 / 19

Moving on to step 2:
When dividing 80 by 19, we get 4 with a remainder of 4.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we subtract 76 from 80, we get 4.
Grab the next digit (0) from the dividend, add it to 4, then carry on: 40 / 19

Moving on to step 3:
19 goes into 40 2 times with a remainder of 2.
The number 2 becomes the next digit in our result. 
Result so far: 42.0
If we subtract 38 from 40, we get 2.
Grab the next digit (8) from the dividend, add it to 2, then carry on: 28 / 19

On to step 4:
19 can be fit into 28 1 times, resulting in a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 421.0
Subtracting 19 from 28 leaves us with 9.
Append the next digit (5) from the dividend to 9 and continue with: 95 / 19

Going ahead to step 5:
The number 19 fits into 95 5 times, leaving a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 4215.0
If we subtract 95 from 95, we get 0.
Bring next digit (7) of the dividend behind the 0 and repeat the process: 7 / 19

Step 6:
When dividing 7 by 19, we get 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 42150.0
If we subtract 0 from 7, 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 7:
The number 19 fits into 70 3 times, leaving a remainder of 13.
Record the quotient 3 as the next digit in the result. 
Result so far: 42150.3
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.

Advancing to step 8:
When dividing 130 by 19, we get 6 with a remainder of 16.
Put 6 as the next digit of the answer. 
Result so far: 42150.36
Deduct 114 from 130 and we're left 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.

Step 9:
19 goes into 160 8 times with a remainder of 8.
The number 8 becomes the next digit in our result. 
Result so far: 42150.368
Subtract 152 from 160 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 10:
19 goes into 80 4 times with a remainder of 4.
The next digit of our result is 4. 
Result so far: 42150.3684
Deduct 76 from 80 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 11:
The number 19 fits into 40 2 times, leaving a remainder of 2.
Record the quotient 2 as the next digit in the result. 
Result so far: 42150.36842
If we subtract 38 from 40, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 12:
19 goes into 20 1 times with a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 42150.368421
If we subtract 19 from 20, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 13:
If we divide 10 by 19, we get 0 and a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 42150.368421
Deduct 0 from 10 and we're left 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.

Going ahead to step 14:
When dividing 100 by 19, we get 5 with a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 42150.36842105
Subtracting 95 from 100 leaves us 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.

Our division results in 42150.36842105 with a remaining 5e-09.