66107823 ÷ 619 
The aim is to understand the frequency of 619 in 66107823.

Going ahead to step 1:
If we divide 6 by 619, we get 0 and a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 619

On to step 2:
619 can be fit into 66 0 times, resulting in a remainder of 66.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 66, we get 66.
Append the next digit (1) from the dividend to 66 and continue with: 661 / 619

Step 3:
The number 619 fits into 661 1 times, leaving a remainder of 42.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 42 after subtracting 619 from 661.
Grab the next digit (0) from the dividend, add it to 42, then carry on: 420 / 619

Advancing to step 4:
420 divided by 619 is 0 with a remainder of 420.
Write down 0 as next digit of the result. 
Result so far: 10.0
Subtract 0 from 420 to get 420.
Append the next digit (7) from the dividend to 420 and continue with: 4207 / 619

Moving on to step 5:
619 goes into 4207 6 times with a remainder of 493.
Write down 6 as next digit of the result. 
Result so far: 106.0
If we subtract 3714 from 4207, we get 493.
Fetch the next digit (8) from the dividend, attach it to 493 and continue: 4938 / 619

Let's proceed to step 6:
If we divide 4938 by 619, we get 7 and a remainder of 605.
The next digit of our result is 7. 
Result so far: 1067.0
The remainder is 605 after subtracting 4333 from 4938.
Bring next digit (2) of the dividend behind the 605 and repeat the process: 6052 / 619

Advancing to step 7:
The number 619 fits into 6052 9 times, leaving a remainder of 481.
The next digit of our result is 9. 
Result so far: 10679.0
Subtracting 5571 from 6052 leaves us with 481.
Include the next digit (3) from the dividend after 481, then repeat: 4813 / 619

Advancing to step 8:
619 can be fit into 4813 7 times, resulting in a remainder of 480.
Record the quotient 7 as the next digit in the result. 
Result so far: 106797.0
Subtracting 4333 from 4813 leaves us with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Step 9:
If we divide 4800 by 619, we get 7 and a remainder of 467.
Write down 7 as next digit of the result. 
Result so far: 106797.7
Deduct 4333 from 4800 and we're left with 467.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4670, and continue the process.

Advancing to step 10:
619 goes into 4670 7 times with a remainder of 337.
Use 7 as the next digit of our solution. 
Result so far: 106797.77
Subtract 4333 from 4670 to get 337.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3370, and continue the process.

In conclusion, the division gives 106797.77 with a balance of 0.337.