We're dividing 725638 by 19 
The aim is to understand the frequency of 19 in 725638.

Step 1:
When dividing 7 by 19, we get 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 19

Advancing to step 2:
19 goes into 72 3 times with a remainder of 15.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtract 57 from 72 to get 15.
Grab the next digit (5) from the dividend, add it to 15, then carry on: 155 / 19

Step 3:
19 can be fit into 155 8 times, resulting in a remainder of 3.
Write down 8 as next digit of the result. 
Result so far: 38.0
Deduct 152 from 155 and we're left with 3.
Include the next digit (6) from the dividend after 3, then repeat: 36 / 19

Advancing to step 4:
The number 19 fits into 36 1 times, leaving a remainder of 17.
The next digit of our result is 1. 
Result so far: 381.0
Subtracting 19 from 36 leaves us with 17.
Append the next digit (3) from the dividend to 17 and continue with: 173 / 19

Moving on to step 5:
19 can be fit into 173 9 times, resulting in a remainder of 2.
Use 9 as the next digit of our solution. 
Result so far: 3819.0
If we take 171 away from 173, we end up with 2.
Include the next digit (8) from the dividend after 2, then repeat: 28 / 19

On to step 6:
19 goes into 28 1 times with a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 38191.0
The remainder is 9 after subtracting 19 from 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 7:
If we divide 90 by 19, we get 4 and a remainder of 14.
Write down 4 as next digit of the result. 
Result so far: 38191.4
If we take 76 away from 90, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 8:
140 divided by 19 is 7 with a remainder of 7.
The number 7 becomes the next digit in our result. 
Result so far: 38191.47
Deduct 133 from 140 and we're left with 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 9:
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: 38191.473
If we subtract 57 from 70, we get 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 10:
The number 19 fits into 130 6 times, leaving a remainder of 16.
Record the quotient 6 as the next digit in the result. 
Result so far: 38191.4736
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 11:
The number 19 fits into 160 8 times, leaving a remainder of 8.
The next digit of our result is 8. 
Result so far: 38191.47368
Subtracting 152 from 160 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 12:
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: 38191.473684
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.

Advancing to step 13:
40 divided by 19 is 2 with a remainder of 2.
Use 2 as the next digit of our solution. 
Result so far: 38191.4736842
The remainder is 2 after subtracting 38 from 40.
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 14:
20 divided by 19 is 1 with a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 38191.47368421
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.

In conclusion, the division gives 38191.47368421 with a balance of 1e-09.