We're dividing 83912507 by 618 
The aim is to understand the frequency of 618 in 83912507.

Let's proceed to step 1:
If we divide 8 by 618, we get 0 and a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Take the next digit (3) from the dividend and append it to 8, then repeat: 83 / 618

Moving on to step 2:
83 divided by 618 is 0 with a remainder of 83.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 83 after subtracting 0 from 83.
Grab the next digit (9) from the dividend, add it to 83, then carry on: 839 / 618

Let's proceed to step 3:
839 divided by 618 is 1 with a remainder of 221.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 618 away from 839, we end up with 221.
Take the next digit (1) from the dividend and append it to 221, then repeat: 2211 / 618

On to step 4:
The number 618 fits into 2211 3 times, leaving a remainder of 357.
The next digit of our result is 3. 
Result so far: 13.0
The remainder is 357 after subtracting 1854 from 2211.
Take the next digit (2) from the dividend and append it to 357, then repeat: 3572 / 618

Going ahead to step 5:
When dividing 3572 by 618, we get 5 with a remainder of 482.
The number 5 becomes the next digit in our result. 
Result so far: 135.0
Deduct 3090 from 3572 and we're left with 482.
Take the next digit (5) from the dividend and append it to 482, then repeat: 4825 / 618

Step 6:
When dividing 4825 by 618, we get 7 with a remainder of 499.
Write down 7 as next digit of the result. 
Result so far: 1357.0
Subtract 4326 from 4825 to get 499.
Bring next digit (0) of the dividend behind the 499 and repeat the process: 4990 / 618

Moving on to step 7:
The number 618 fits into 4990 8 times, leaving a remainder of 46.
The next digit of our result is 8. 
Result so far: 13578.0
The remainder is 46 after subtracting 4944 from 4990.
Bring next digit (7) of the dividend behind the 46 and repeat the process: 467 / 618

Going ahead to step 8:
618 can be fit into 467 0 times, resulting in a remainder of 467.
Record the quotient 0 as the next digit in the result. 
Result so far: 135780.0
If we take 0 away from 467, we end up 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.

Step 9:
The number 618 fits into 4670 7 times, leaving a remainder of 344.
Write down 7 as next digit of the result. 
Result so far: 135780.7
Subtracting 4326 from 4670 leaves us with 344.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

Let's proceed to step 10:
618 goes into 3440 5 times with a remainder of 350.
Put 5 as the next digit of the answer. 
Result so far: 135780.75
Deduct 3090 from 3440 and we're left with 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Advancing to step 11:
3500 divided by 618 is 5 with a remainder of 410.
Put 5 as the next digit of the answer. 
Result so far: 135780.755
The remainder is 410 after subtracting 3090 from 3500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4100, and continue the process.

The final result is 135780.755 with a remainder of 0.041.