872037 ÷ 19 
The aim is to understand the frequency of 19 in 872037.

On to step 1:
8 divided by 19 is 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (7) from the dividend, add it to 8, then carry on: 87 / 19

Advancing to step 2:
When dividing 87 by 19, we get 4 with a remainder of 11.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtract 76 from 87 to get 11.
Grab the next digit (2) from the dividend, add it to 11, then carry on: 112 / 19

Step 3:
19 goes into 112 5 times with a remainder of 17.
Put 5 as the next digit of the answer. 
Result so far: 45.0
Subtract 95 from 112 to get 17.
Include the next digit (0) from the dividend after 17, then repeat: 170 / 19

Advancing to step 4:
If we divide 170 by 19, we get 8 and a remainder of 18.
Use 8 as the next digit of our solution. 
Result so far: 458.0
Subtract 152 from 170 to get 18.
Fetch the next digit (3) from the dividend, attach it to 18 and continue: 183 / 19

On to step 5:
19 can be fit into 183 9 times, resulting in a remainder of 12.
Record the quotient 9 as the next digit in the result. 
Result so far: 4589.0
The remainder is 12 after subtracting 171 from 183.
Fetch the next digit (7) from the dividend, attach it to 12 and continue: 127 / 19

Advancing to step 6:
19 goes into 127 6 times with a remainder of 13.
Put 6 as the next digit of the answer. 
Result so far: 45896.0
Subtracting 114 from 127 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.

On to step 7:
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: 45896.6
If we take 114 away from 130, we end up 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.

On to step 8:
The number 19 fits into 160 8 times, leaving a remainder of 8.
Use 8 as the next digit of our solution. 
Result so far: 45896.68
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.

On to step 9:
The number 19 fits into 80 4 times, leaving a remainder of 4.
Write down 4 as next digit of the result. 
Result so far: 45896.684
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.

Let's proceed to step 10:
If we divide 40 by 19, we get 2 and a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 45896.6842
Subtract 38 from 40 to 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.

Step 11:
20 divided by 19 is 1 with a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 45896.68421
Deduct 19 from 20 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 12:
The number 19 fits into 10 0 times, leaving a remainder of 10.
The next digit of our result is 0. 
Result so far: 45896.68421
If we subtract 0 from 10, we get 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 13:
The number 19 fits into 100 5 times, leaving a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 45896.6842105
Deduct 95 from 100 and we're left 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.

On to step 14:
The number 19 fits into 50 2 times, leaving a remainder of 12.
Write down 2 as next digit of the result. 
Result so far: 45896.68421052
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.

The final outcome is 45896.68421052, with a leftover of 1.2e-08.