17572939 ÷ 19 
The aim is to understand the frequency of 19 in 17572939.

Going ahead to step 1:
19 can be fit into 1 0 times, resulting in a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Fetch the next digit (7) from the dividend, attach it to 1 and continue: 17 / 19

Moving on to step 2:
When dividing 17 by 19, we get 0 with a remainder of 17.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 17, we get 17.
Take the next digit (5) from the dividend and append it to 17, then repeat: 175 / 19

Advancing to step 3:
When dividing 175 by 19, we get 9 with a remainder of 4.
Use 9 as the next digit of our solution. 
Result so far: 9.0
If we subtract 171 from 175, we get 4.
Grab the next digit (7) from the dividend, add it to 4, then carry on: 47 / 19

On to step 4:
When dividing 47 by 19, we get 2 with a remainder of 9.
The next digit of our result is 2. 
Result so far: 92.0
Deduct 38 from 47 and we're left with 9.
Append the next digit (2) from the dividend to 9 and continue with: 92 / 19

Advancing to step 5:
If we divide 92 by 19, we get 4 and a remainder of 16.
Put 4 as the next digit of the answer. 
Result so far: 924.0
Subtracting 76 from 92 leaves us with 16.
Include the next digit (9) from the dividend after 16, then repeat: 169 / 19

On to step 6:
169 divided by 19 is 8 with a remainder of 17.
The number 8 becomes the next digit in our result. 
Result so far: 9248.0
Deduct 152 from 169 and we're left with 17.
Fetch the next digit (3) from the dividend, attach it to 17 and continue: 173 / 19

Going ahead to step 7:
The number 19 fits into 173 9 times, leaving a remainder of 2.
Record the quotient 9 as the next digit in the result. 
Result so far: 92489.0
The remainder is 2 after subtracting 171 from 173.
Bring next digit (9) of the dividend behind the 2 and repeat the process: 29 / 19

Moving on to step 8:
When dividing 29 by 19, we get 1 with a remainder of 10.
The number 1 becomes the next digit in our result. 
Result so far: 924891.0
Subtract 19 from 29 to 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.

Let's proceed to step 9:
100 divided by 19 is 5 with a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 924891.5
The remainder is 5 after subtracting 95 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 10:
19 goes into 50 2 times with a remainder of 12.
Record the quotient 2 as the next digit in the result. 
Result so far: 924891.52
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.

Going ahead to step 11:
19 can be fit into 120 6 times, resulting in a remainder of 6.
Put 6 as the next digit of the answer. 
Result so far: 924891.526
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.

Step 12:
19 can be fit into 60 3 times, resulting in a remainder of 3.
Put 3 as the next digit of the answer. 
Result so far: 924891.5263
Subtracting 57 from 60 leaves us with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 13:
19 goes into 30 1 times with a remainder of 11.
Use 1 as the next digit of our solution. 
Result so far: 924891.52631
If we subtract 19 from 30, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 14:
The number 19 fits into 110 5 times, leaving a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 924891.526315
If we take 95 away from 110, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 15:
19 can be fit into 150 7 times, resulting in a remainder of 17.
The number 7 becomes the next digit in our result. 
Result so far: 924891.5263157
Deduct 133 from 150 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 16:
19 can be fit into 170 8 times, resulting in a remainder of 18.
The number 8 becomes the next digit in our result. 
Result so far: 924891.52631578
Deduct 152 from 170 and we're left with 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 924891.52631578 with a remainder of 1.8e-08.