We look at the division of 83740623 by 579 
The aim is to understand the frequency of 579 in 83740623.

Let's proceed to step 1:
8 divided by 579 is 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Include the next digit (3) from the dividend after 8, then repeat: 83 / 579

On to step 2:
83 divided by 579 is 0 with a remainder of 83.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 83 after subtracting 0 from 83.
Append the next digit (7) from the dividend to 83 and continue with: 837 / 579

Going ahead to step 3:
579 goes into 837 1 times with a remainder of 258.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 579 from 837 leaves us with 258.
Append the next digit (4) from the dividend to 258 and continue with: 2584 / 579

Moving on to step 4:
If we divide 2584 by 579, we get 4 and a remainder of 268.
Write down 4 as next digit of the result. 
Result so far: 14.0
If we subtract 2316 from 2584, we get 268.
Take the next digit (0) from the dividend and append it to 268, then repeat: 2680 / 579

On to step 5:
579 can be fit into 2680 4 times, resulting in a remainder of 364.
Record the quotient 4 as the next digit in the result. 
Result so far: 144.0
Subtract 2316 from 2680 to get 364.
Grab the next digit (6) from the dividend, add it to 364, then carry on: 3646 / 579

Moving on to step 6:
3646 divided by 579 is 6 with a remainder of 172.
The next digit of our result is 6. 
Result so far: 1446.0
If we subtract 3474 from 3646, we get 172.
Append the next digit (2) from the dividend to 172 and continue with: 1722 / 579

Step 7:
When dividing 1722 by 579, we get 2 with a remainder of 564.
The number 2 becomes the next digit in our result. 
Result so far: 14462.0
If we take 1158 away from 1722, we end up with 564.
Include the next digit (3) from the dividend after 564, then repeat: 5643 / 579

Moving on to step 8:
5643 divided by 579 is 9 with a remainder of 432.
Use 9 as the next digit of our solution. 
Result so far: 144629.0
Deduct 5211 from 5643 and we're left with 432.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4320, and continue the process.

On to step 9:
579 can be fit into 4320 7 times, resulting in a remainder of 267.
Write down 7 as next digit of the result. 
Result so far: 144629.7
Deduct 4053 from 4320 and we're left with 267.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2670, and continue the process.

Step 10:
The number 579 fits into 2670 4 times, leaving a remainder of 354.
Use 4 as the next digit of our solution. 
Result so far: 144629.74
If we take 2316 away from 2670, we end up with 354.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3540, and continue the process.

Going ahead to step 11:
If we divide 3540 by 579, we get 6 and a remainder of 66.
Record the quotient 6 as the next digit in the result. 
Result so far: 144629.746
Deduct 3474 from 3540 and we're left with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Advancing to step 12:
When dividing 660 by 579, we get 1 with a remainder of 81.
Use 1 as the next digit of our solution. 
Result so far: 144629.7461
Subtracting 579 from 660 leaves us with 81.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Moving on to step 13:
810 divided by 579 is 1 with a remainder of 231.
Record the quotient 1 as the next digit in the result. 
Result so far: 144629.74611
Deduct 579 from 810 and we're left with 231.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2310, and continue the process.

In conclusion, the division gives 144629.74611 with a balance of 0.000231.