66859596 ÷ 107 
The aim is to understand the frequency of 107 in 66859596.

Step 1:
If we divide 6 by 107, we get 0 and a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 107

Step 2:
If we divide 66 by 107, we get 0 and a remainder of 66.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 66, we end up with 66.
Bring next digit (8) of the dividend behind the 66 and repeat the process: 668 / 107

Let's proceed to step 3:
The number 107 fits into 668 6 times, leaving a remainder of 26.
Use 6 as the next digit of our solution. 
Result so far: 6.0
The remainder is 26 after subtracting 642 from 668.
Append the next digit (5) from the dividend to 26 and continue with: 265 / 107

Step 4:
265 divided by 107 is 2 with a remainder of 51.
Use 2 as the next digit of our solution. 
Result so far: 62.0
Deduct 214 from 265 and we're left with 51.
Include the next digit (9) from the dividend after 51, then repeat: 519 / 107

Going ahead to step 5:
107 goes into 519 4 times with a remainder of 91.
Put 4 as the next digit of the answer. 
Result so far: 624.0
If we subtract 428 from 519, we get 91.
Grab the next digit (5) from the dividend, add it to 91, then carry on: 915 / 107

Let's proceed to step 6:
The number 107 fits into 915 8 times, leaving a remainder of 59.
The number 8 becomes the next digit in our result. 
Result so far: 6248.0
Deduct 856 from 915 and we're left with 59.
Include the next digit (9) from the dividend after 59, then repeat: 599 / 107

Advancing to step 7:
107 goes into 599 5 times with a remainder of 64.
The number 5 becomes the next digit in our result. 
Result so far: 62485.0
Subtracting 535 from 599 leaves us with 64.
Fetch the next digit (6) from the dividend, attach it to 64 and continue: 646 / 107

On to step 8:
When dividing 646 by 107, we get 6 with a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 624856.0
Deduct 642 from 646 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 9:
When dividing 40 by 107, we get 0 with a remainder of 40.
Write down 0 as next digit of the result. 
Result so far: 624856.0
Subtracting 0 from 40 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 10:
107 goes into 400 3 times with a remainder of 79.
Write down 3 as next digit of the result. 
Result so far: 624856.03
Deduct 321 from 400 and we're left with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Going ahead to step 11:
If we divide 790 by 107, we get 7 and a remainder of 41.
Write down 7 as next digit of the result. 
Result so far: 624856.037
The remainder is 41 after subtracting 749 from 790.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

On to step 12:
410 divided by 107 is 3 with a remainder of 89.
The next digit of our result is 3. 
Result so far: 624856.0373
The remainder is 89 after subtracting 321 from 410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

Going ahead to step 13:
107 goes into 890 8 times with a remainder of 34.
Use 8 as the next digit of our solution. 
Result so far: 624856.03738
If we subtract 856 from 890, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Going ahead to step 14:
If we divide 340 by 107, we get 3 and a remainder of 19.
The next digit of our result is 3. 
Result so far: 624856.037383
The remainder is 19 after subtracting 321 from 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 15:
107 can be fit into 190 1 times, resulting in a remainder of 83.
Put 1 as the next digit of the answer. 
Result so far: 624856.0373831
Subtract 107 from 190 to get 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Step 16:
If we divide 830 by 107, we get 7 and a remainder of 81.
Record the quotient 7 as the next digit in the result. 
Result so far: 624856.03738317
Subtracting 749 from 830 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.

The final outcome is 624856.03738317, with a leftover of 8.1e-08.