878507 ÷ 19 
The aim is to understand the frequency of 19 in 878507.

On to step 1:
19 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 19

Going ahead to step 2:
When dividing 87 by 19, we get 4 with a remainder of 11.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Deduct 76 from 87 and we're left with 11.
Append the next digit (8) from the dividend to 11 and continue with: 118 / 19

Moving on to step 3:
If we divide 118 by 19, we get 6 and a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 46.0
Subtracting 114 from 118 leaves us with 4.
Append the next digit (5) from the dividend to 4 and continue with: 45 / 19

Step 4:
45 divided by 19 is 2 with a remainder of 7.
Put 2 as the next digit of the answer. 
Result so far: 462.0
Deduct 38 from 45 and we're left with 7.
Take the next digit (0) from the dividend and append it to 7, then repeat: 70 / 19

Going ahead to step 5:
70 divided by 19 is 3 with a remainder of 13.
Use 3 as the next digit of our solution. 
Result so far: 4623.0
Deduct 57 from 70 and we're left with 13.
Take the next digit (7) from the dividend and append it to 13, then repeat: 137 / 19

Going ahead to step 6:
If we divide 137 by 19, we get 7 and a remainder of 4.
Record the quotient 7 as the next digit in the result. 
Result so far: 46237.0
The remainder is 4 after subtracting 133 from 137.
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 7:
The number 19 fits into 40 2 times, leaving a remainder of 2.
The number 2 becomes the next digit in our result. 
Result so far: 46237.2
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.

Step 8:
20 divided by 19 is 1 with a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 46237.21
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.

Moving on to step 9:
10 divided by 19 is 0 with a remainder of 10.
The next digit of our result is 0. 
Result so far: 46237.21
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.

Going ahead to step 10:
The number 19 fits into 100 5 times, leaving a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 46237.2105
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.

Moving on to step 11:
19 can be fit into 50 2 times, resulting in a remainder of 12.
Put 2 as the next digit of the answer. 
Result so far: 46237.21052
Subtract 38 from 50 to 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.

On to step 12:
19 goes into 120 6 times with a remainder of 6.
Write down 6 as next digit of the result. 
Result so far: 46237.210526
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 13:
The number 19 fits into 60 3 times, leaving a remainder of 3.
The number 3 becomes the next digit in our result. 
Result so far: 46237.2105263
The remainder is 3 after subtracting 57 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 14:
The number 19 fits into 30 1 times, leaving a remainder of 11.
Put 1 as the next digit of the answer. 
Result so far: 46237.21052631
Deduct 19 from 30 and we're left 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.

The final result is 46237.21052631 with a remainder of 1.1e-08.