723017 ÷ 19 
The aim is to understand the frequency of 19 in 723017.

Advancing to step 1:
The number 19 fits into 7 0 times, leaving a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Fetch the next digit (2) from the dividend, attach it to 7 and continue: 72 / 19

Moving on to step 2:
72 divided by 19 is 3 with a remainder of 15.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Deduct 57 from 72 and we're left with 15.
Append the next digit (3) from the dividend to 15 and continue with: 153 / 19

Step 3:
19 goes into 153 8 times with a remainder of 1.
The next digit of our result is 8. 
Result so far: 38.0
If we take 152 away from 153, we end up with 1.
Grab the next digit (0) from the dividend, add it to 1, then carry on: 10 / 19

Going ahead to step 4:
19 goes into 10 0 times with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 380.0
The remainder is 10 after subtracting 0 from 10.
Take the next digit (1) from the dividend and append it to 10, then repeat: 101 / 19

Step 5:
19 can be fit into 101 5 times, resulting in a remainder of 6.
Write down 5 as next digit of the result. 
Result so far: 3805.0
Subtracting 95 from 101 leaves us with 6.
Append the next digit (7) from the dividend to 6 and continue with: 67 / 19

Moving on to step 6:
If we divide 67 by 19, we get 3 and a remainder of 10.
Record the quotient 3 as the next digit in the result. 
Result so far: 38053.0
Deduct 57 from 67 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 7:
19 can be fit into 100 5 times, resulting in a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 38053.5
Subtract 95 from 100 to get 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 8:
19 goes into 50 2 times with a remainder of 12.
The number 2 becomes the next digit in our result. 
Result so far: 38053.52
Deduct 38 from 50 and we're left with 12.
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 9:
19 goes into 120 6 times with a remainder of 6.
Put 6 as the next digit of the answer. 
Result so far: 38053.526
The remainder is 6 after subtracting 114 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 10:
60 divided by 19 is 3 with a remainder of 3.
The number 3 becomes the next digit in our result. 
Result so far: 38053.5263
If we subtract 57 from 60, we 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.

Moving on to step 11:
The number 19 fits into 30 1 times, leaving a remainder of 11.
Record the quotient 1 as the next digit in the result. 
Result so far: 38053.52631
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.

Step 12:
110 divided by 19 is 5 with a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 38053.526315
Subtract 95 from 110 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 13:
19 goes into 150 7 times with a remainder of 17.
Record the quotient 7 as the next digit in the result. 
Result so far: 38053.5263157
Subtract 133 from 150 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 14:
170 divided by 19 is 8 with a remainder of 18.
The number 8 becomes the next digit in our result. 
Result so far: 38053.52631578
Subtract 152 from 170 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

The final result is 38053.52631578 with a remainder of 1.8e-08.