Let's divide 43256074 by 639
The aim is to understand the frequency of 639 in 43256074.

Advancing to step 1:
639 can be fit into 4 0 times, resulting in a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Include the next digit (3) from the dividend after 4, then repeat: 43 / 639

Step 2:
639 can be fit into 43 0 times, resulting in a remainder of 43.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 43, we get 43.
Take the next digit (2) from the dividend and append it to 43, then repeat: 432 / 639

Going ahead to step 3:
639 can be fit into 432 0 times, resulting in a remainder of 432.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 432, we get 432.
Bring next digit (5) of the dividend behind the 432 and repeat the process: 4325 / 639

Moving on to step 4:
4325 divided by 639 is 6 with a remainder of 491.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Subtract 3834 from 4325 to get 491.
Fetch the next digit (6) from the dividend, attach it to 491 and continue: 4916 / 639

Advancing to step 5:
639 goes into 4916 7 times with a remainder of 443.
Use 7 as the next digit of our solution. 
Result so far: 67.0
Subtract 4473 from 4916 to get 443.
Fetch the next digit (0) from the dividend, attach it to 443 and continue: 4430 / 639

Step 6:
The number 639 fits into 4430 6 times, leaving a remainder of 596.
Use 6 as the next digit of our solution. 
Result so far: 676.0
Deduct 3834 from 4430 and we're left with 596.
Grab the next digit (7) from the dividend, add it to 596, then carry on: 5967 / 639

Step 7:
5967 divided by 639 is 9 with a remainder of 216.
The next digit of our result is 9. 
Result so far: 6769.0
Deduct 5751 from 5967 and we're left with 216.
Take the next digit (4) from the dividend and append it to 216, then repeat: 2164 / 639

Advancing to step 8:
639 can be fit into 2164 3 times, resulting in a remainder of 247.
Put 3 as the next digit of the answer. 
Result so far: 67693.0
Subtracting 1917 from 2164 leaves us with 247.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2470, and continue the process.

Moving on to step 9:
If we divide 2470 by 639, we get 3 and a remainder of 553.
The next digit of our result is 3. 
Result so far: 67693.3
The remainder is 553 after subtracting 1917 from 2470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5530, and continue the process.

Step 10:
When dividing 5530 by 639, we get 8 with a remainder of 418.
Use 8 as the next digit of our solution. 
Result so far: 67693.38
If we subtract 5112 from 5530, we get 418.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4180, and continue the process.

On to step 11:
When dividing 4180 by 639, we get 6 with a remainder of 346.
The next digit of our result is 6. 
Result so far: 67693.386
If we subtract 3834 from 4180, we get 346.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3460, and continue the process.

Let's proceed to step 12:
When dividing 3460 by 639, we get 5 with a remainder of 265.
The number 5 becomes the next digit in our result. 
Result so far: 67693.3865
If we take 3195 away from 3460, we end up with 265.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2650, and continue the process.

Let's proceed to step 13:
639 can be fit into 2650 4 times, resulting in a remainder of 94.
Use 4 as the next digit of our solution. 
Result so far: 67693.38654
Deduct 2556 from 2650 and we're left with 94.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

Going ahead to step 14:
639 can be fit into 940 1 times, resulting in a remainder of 301.
The number 1 becomes the next digit in our result. 
Result so far: 67693.386541
If we subtract 639 from 940, we get 301.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3010, and continue the process.

On to step 15:
If we divide 3010 by 639, we get 4 and a remainder of 454.
The number 4 becomes the next digit in our result. 
Result so far: 67693.3865414
If we subtract 2556 from 3010, we get 454.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4540, and continue the process.

Advancing to step 16:
639 goes into 4540 7 times with a remainder of 67.
The number 7 becomes the next digit in our result. 
Result so far: 67693.38654147
Subtract 4473 from 4540 to get 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Our division results in 67693.38654147 with a remaining 6.7e-08.