612021 ÷ 19 
The aim is to understand the frequency of 19 in 612021.

Let's proceed to step 1:
If we divide 6 by 19, we get 0 and a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Fetch the next digit (1) from the dividend, attach it to 6 and continue: 61 / 19

Let's proceed to step 2:
61 divided by 19 is 3 with a remainder of 4.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
If we take 57 away from 61, we end up with 4.
Fetch the next digit (2) from the dividend, attach it to 4 and continue: 42 / 19

Moving on to step 3:
When dividing 42 by 19, we get 2 with a remainder of 4.
Write down 2 as next digit of the result. 
Result so far: 32.0
Deduct 38 from 42 and we're left with 4.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 19

On to step 4:
19 can be fit into 40 2 times, resulting in a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 322.0
Subtract 38 from 40 to get 2.
Include the next digit (2) from the dividend after 2, then repeat: 22 / 19

Moving on to step 5:
22 divided by 19 is 1 with a remainder of 3.
The number 1 becomes the next digit in our result. 
Result so far: 3221.0
The remainder is 3 after subtracting 19 from 22.
Take the next digit (1) from the dividend and append it to 3, then repeat: 31 / 19

Let's proceed to step 6:
31 divided by 19 is 1 with a remainder of 12.
The next digit of our result is 1. 
Result so far: 32211.0
Subtract 19 from 31 to 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 7:
120 divided by 19 is 6 with a remainder of 6.
The next digit of our result is 6. 
Result so far: 32211.6
Subtracting 114 from 120 leaves us 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 8:
19 can be fit into 60 3 times, resulting in a remainder of 3.
Record the quotient 3 as the next digit in the result. 
Result so far: 32211.63
The remainder is 3 after subtracting 57 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 9:
When dividing 30 by 19, we get 1 with a remainder of 11.
Record the quotient 1 as the next digit in the result. 
Result so far: 32211.631
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.

Going ahead to step 10:
The number 19 fits into 110 5 times, leaving a remainder of 15.
The next digit of our result is 5. 
Result so far: 32211.6315
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.

Advancing to step 11:
19 goes into 150 7 times with a remainder of 17.
Write down 7 as next digit of the result. 
Result so far: 32211.63157
The remainder is 17 after subtracting 133 from 150.
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 12:
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: 32211.631578
If we subtract 152 from 170, we 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.

On to step 13:
The number 19 fits into 180 9 times, leaving a remainder of 9.
Record the quotient 9 as the next digit in the result. 
Result so far: 32211.6315789
Subtract 171 from 180 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 14:
19 can be fit into 90 4 times, resulting in a remainder of 14.
Record the quotient 4 as the next digit in the result. 
Result so far: 32211.63157894
Deduct 76 from 90 and we're left 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.

The final outcome is 32211.63157894, with a leftover of 1.4e-08.