We're dividing 991718 by 19 
The aim is to understand the frequency of 19 in 991718.

Going ahead to step 1:
When dividing 9 by 19, we get 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 19

Moving on to step 2:
19 can be fit into 99 5 times, resulting in a remainder of 4.
Write down 5 as next digit of the result. 
Result so far: 5.0
Subtract 95 from 99 to get 4.
Bring next digit (1) of the dividend behind the 4 and repeat the process: 41 / 19

Step 3:
19 goes into 41 2 times with a remainder of 3.
The number 2 becomes the next digit in our result. 
Result so far: 52.0
The remainder is 3 after subtracting 38 from 41.
Grab the next digit (7) from the dividend, add it to 3, then carry on: 37 / 19

Moving on to step 4:
19 goes into 37 1 times with a remainder of 18.
The next digit of our result is 1. 
Result so far: 521.0
Deduct 19 from 37 and we're left with 18.
Append the next digit (1) from the dividend to 18 and continue with: 181 / 19

On to step 5:
19 can be fit into 181 9 times, resulting in a remainder of 10.
Use 9 as the next digit of our solution. 
Result so far: 5219.0
If we take 171 away from 181, we end up with 10.
Grab the next digit (8) from the dividend, add it to 10, then carry on: 108 / 19

Going ahead to step 6:
If we divide 108 by 19, we get 5 and a remainder of 13.
Write down 5 as next digit of the result. 
Result so far: 52195.0
The remainder is 13 after subtracting 95 from 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Going ahead to step 7:
The number 19 fits into 130 6 times, leaving a remainder of 16.
The number 6 becomes the next digit in our result. 
Result so far: 52195.6
Subtracting 114 from 130 leaves us 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 8:
The number 19 fits into 160 8 times, leaving a remainder of 8.
The next digit of our result is 8. 
Result so far: 52195.68
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.

Going ahead to step 9:
When dividing 80 by 19, we get 4 with a remainder of 4.
Write down 4 as next digit of the result. 
Result so far: 52195.684
The remainder is 4 after subtracting 76 from 80.
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 10:
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: 52195.6842
If we take 38 away from 40, we end up with 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 11:
19 goes into 20 1 times with a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 52195.68421
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.

Going ahead to step 12:
10 divided by 19 is 0 with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 52195.68421
Subtracting 0 from 10 leaves us 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.

Let's proceed to step 13:
If we divide 100 by 19, we get 5 and a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 52195.6842105
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.

Advancing to step 14:
19 goes into 50 2 times with a remainder of 12.
Use 2 as the next digit of our solution. 
Result so far: 52195.68421052
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.

The final result is 52195.68421052 with a remainder of 1.2e-08.