Let's divide 77603639 by 19
The aim is to understand the frequency of 19 in 77603639.

Advancing to step 1:
7 divided by 19 is 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Append the next digit (7) from the dividend to 7 and continue with: 77 / 19

Going ahead to step 2:
77 divided by 19 is 4 with a remainder of 1.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Deduct 76 from 77 and we're left with 1.
Include the next digit (6) from the dividend after 1, then repeat: 16 / 19

Going ahead to step 3:
16 divided by 19 is 0 with a remainder of 16.
Record the quotient 0 as the next digit in the result. 
Result so far: 40.0
If we take 0 away from 16, we end up with 16.
Take the next digit (0) from the dividend and append it to 16, then repeat: 160 / 19

Moving on to step 4:
160 divided by 19 is 8 with a remainder of 8.
Use 8 as the next digit of our solution. 
Result so far: 408.0
If we take 152 away from 160, we end up with 8.
Fetch the next digit (3) from the dividend, attach it to 8 and continue: 83 / 19

Going ahead to step 5:
83 divided by 19 is 4 with a remainder of 7.
Use 4 as the next digit of our solution. 
Result so far: 4084.0
Subtract 76 from 83 to get 7.
Grab the next digit (6) from the dividend, add it to 7, then carry on: 76 / 19

Step 6:
19 goes into 76 4 times with a remainder of 0.
Write down 4 as next digit of the result. 
Result so far: 40844.0
The remainder is 0 after subtracting 76 from 76.
Take the next digit (3) from the dividend and append it to 0, then repeat: 3 / 19

Going ahead to step 7:
When dividing 3 by 19, we get 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 408440.0
Subtracting 0 from 3 leaves us with 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 19

Going ahead to step 8:
If we divide 39 by 19, we get 2 and a remainder of 1.
Put 2 as the next digit of the answer. 
Result so far: 4084402.0
The remainder is 1 after subtracting 38 from 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 9:
When dividing 10 by 19, we get 0 with a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 4084402.0
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 10:
100 divided by 19 is 5 with a remainder of 5.
The next digit of our result is 5. 
Result so far: 4084402.05
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.

Step 11:
50 divided by 19 is 2 with a remainder of 12.
Use 2 as the next digit of our solution. 
Result so far: 4084402.052
Subtract 38 from 50 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 12:
When dividing 120 by 19, we get 6 with a remainder of 6.
Write down 6 as next digit of the result. 
Result so far: 4084402.0526
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.

Advancing to step 13:
When dividing 60 by 19, we get 3 with a remainder of 3.
The next digit of our result is 3. 
Result so far: 4084402.05263
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.

Going ahead to step 14:
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: 4084402.052631
Subtract 19 from 30 to 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 15:
110 divided by 19 is 5 with a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 4084402.0526315
Deduct 95 from 110 and we're left 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.

Let's proceed to step 16:
When dividing 150 by 19, we get 7 with a remainder of 17.
Record the quotient 7 as the next digit in the result. 
Result so far: 4084402.05263157
Subtracting 133 from 150 leaves us 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.

The final outcome is 4084402.05263157, with a leftover of 1.7e-08.