712869 ÷ 19 
The aim is to understand the frequency of 19 in 712869.

Step 1:
If we divide 7 by 19, we get 0 and a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Bring next digit (1) of the dividend behind the 7 and repeat the process: 71 / 19

Step 2:
19 goes into 71 3 times with a remainder of 14.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we subtract 57 from 71, we get 14.
Bring next digit (2) of the dividend behind the 14 and repeat the process: 142 / 19

Advancing to step 3:
The number 19 fits into 142 7 times, leaving a remainder of 9.
The number 7 becomes the next digit in our result. 
Result so far: 37.0
Subtract 133 from 142 to get 9.
Bring next digit (8) of the dividend behind the 9 and repeat the process: 98 / 19

Step 4:
When dividing 98 by 19, we get 5 with a remainder of 3.
Put 5 as the next digit of the answer. 
Result so far: 375.0
Deduct 95 from 98 and we're left with 3.
Include the next digit (6) from the dividend after 3, then repeat: 36 / 19

Step 5:
19 goes into 36 1 times with a remainder of 17.
The number 1 becomes the next digit in our result. 
Result so far: 3751.0
If we subtract 19 from 36, we get 17.
Bring next digit (9) of the dividend behind the 17 and repeat the process: 179 / 19

Let's proceed to step 6:
19 goes into 179 9 times with a remainder of 8.
Write down 9 as next digit of the result. 
Result so far: 37519.0
Subtracting 171 from 179 leaves us 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.

Let's proceed to step 7:
If we divide 80 by 19, we get 4 and a remainder of 4.
The number 4 becomes the next digit in our result. 
Result so far: 37519.4
Subtracting 76 from 80 leaves us 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 8:
When dividing 40 by 19, we get 2 with a remainder of 2.
Put 2 as the next digit of the answer. 
Result so far: 37519.42
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.

Moving on to step 9:
The number 19 fits into 20 1 times, leaving a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 37519.421
Subtract 19 from 20 to 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 10:
When dividing 10 by 19, we get 0 with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 37519.421
The remainder is 10 after subtracting 0 from 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 11:
If we divide 100 by 19, we get 5 and a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 37519.42105
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.

Advancing to step 12:
When dividing 50 by 19, we get 2 with a remainder of 12.
Write down 2 as next digit of the result. 
Result so far: 37519.421052
The remainder is 12 after subtracting 38 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 13:
If we divide 120 by 19, we get 6 and a remainder of 6.
The number 6 becomes the next digit in our result. 
Result so far: 37519.4210526
Subtract 114 from 120 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 14:
If we divide 60 by 19, we get 3 and a remainder of 3.
Put 3 as the next digit of the answer. 
Result so far: 37519.42105263
Subtract 57 from 60 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

The final outcome is 37519.42105263, with a leftover of 3e-09.