661704 divided by 19 
The aim is to understand the frequency of 19 in 661704.

Going ahead to step 1:
6 divided by 19 is 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 19

Step 2:
When dividing 66 by 19, we get 3 with a remainder of 9.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Deduct 57 from 66 and we're left with 9.
Include the next digit (1) from the dividend after 9, then repeat: 91 / 19

Step 3:
If we divide 91 by 19, we get 4 and a remainder of 15.
The number 4 becomes the next digit in our result. 
Result so far: 34.0
If we take 76 away from 91, we end up with 15.
Grab the next digit (7) from the dividend, add it to 15, then carry on: 157 / 19

Moving on to step 4:
19 goes into 157 8 times with a remainder of 5.
The next digit of our result is 8. 
Result so far: 348.0
If we take 152 away from 157, we end up with 5.
Take the next digit (0) from the dividend and append it to 5, then repeat: 50 / 19

Moving on to step 5:
The number 19 fits into 50 2 times, leaving a remainder of 12.
Record the quotient 2 as the next digit in the result. 
Result so far: 3482.0
Deduct 38 from 50 and we're left with 12.
Append the next digit (4) from the dividend to 12 and continue with: 124 / 19

Moving on to step 6:
If we divide 124 by 19, we get 6 and a remainder of 10.
Record the quotient 6 as the next digit in the result. 
Result so far: 34826.0
If we subtract 114 from 124, we 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 7:
100 divided by 19 is 5 with a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 34826.5
Subtracting 95 from 100 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 8:
50 divided by 19 is 2 with a remainder of 12.
Use 2 as the next digit of our solution. 
Result so far: 34826.52
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.

Step 9:
19 goes into 120 6 times with a remainder of 6.
The number 6 becomes the next digit in our result. 
Result so far: 34826.526
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.

Moving on to step 10:
If we divide 60 by 19, we get 3 and a remainder of 3.
Write down 3 as next digit of the result. 
Result so far: 34826.5263
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.

On to step 11:
When dividing 30 by 19, we get 1 with a remainder of 11.
Use 1 as the next digit of our solution. 
Result so far: 34826.52631
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.

On to step 12:
The number 19 fits into 110 5 times, leaving a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 34826.526315
The remainder is 15 after subtracting 95 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 13:
150 divided by 19 is 7 with a remainder of 17.
Record the quotient 7 as the next digit in the result. 
Result so far: 34826.5263157
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.

Step 14:
19 goes into 170 8 times with a remainder of 18.
The next digit of our result is 8. 
Result so far: 34826.52631578
If we take 152 away from 170, we end up 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.

In conclusion, the division gives 34826.52631578 with a balance of 1.8e-08.