We look at the division of 43892861 by 664 
The aim is to understand the frequency of 664 in 43892861.

Going ahead to step 1:
664 can be fit into 4 0 times, resulting in a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Fetch the next digit (3) from the dividend, attach it to 4 and continue: 43 / 664

Moving on to step 2:
43 divided by 664 is 0 with a remainder of 43.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 43 to get 43.
Bring next digit (8) of the dividend behind the 43 and repeat the process: 438 / 664

Advancing to step 3:
438 divided by 664 is 0 with a remainder of 438.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 438, we get 438.
Grab the next digit (9) from the dividend, add it to 438, then carry on: 4389 / 664

Going ahead to step 4:
The number 664 fits into 4389 6 times, leaving a remainder of 405.
Write down 6 as next digit of the result. 
Result so far: 6.0
Deduct 3984 from 4389 and we're left with 405.
Bring next digit (2) of the dividend behind the 405 and repeat the process: 4052 / 664

On to step 5:
If we divide 4052 by 664, we get 6 and a remainder of 68.
Write down 6 as next digit of the result. 
Result so far: 66.0
If we subtract 3984 from 4052, we get 68.
Include the next digit (8) from the dividend after 68, then repeat: 688 / 664

Let's proceed to step 6:
When dividing 688 by 664, we get 1 with a remainder of 24.
Use 1 as the next digit of our solution. 
Result so far: 661.0
Subtract 664 from 688 to get 24.
Include the next digit (6) from the dividend after 24, then repeat: 246 / 664

Going ahead to step 7:
246 divided by 664 is 0 with a remainder of 246.
Use 0 as the next digit of our solution. 
Result so far: 6610.0
Deduct 0 from 246 and we're left with 246.
Take the next digit (1) from the dividend and append it to 246, then repeat: 2461 / 664

On to step 8:
664 goes into 2461 3 times with a remainder of 469.
Use 3 as the next digit of our solution. 
Result so far: 66103.0
Subtract 1992 from 2461 to get 469.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4690, and continue the process.

Step 9:
664 goes into 4690 7 times with a remainder of 42.
Write down 7 as next digit of the result. 
Result so far: 66103.7
If we subtract 4648 from 4690, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 10:
420 divided by 664 is 0 with a remainder of 420.
Record the quotient 0 as the next digit in the result. 
Result so far: 66103.7
Deduct 0 from 420 and we're left with 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Moving on to step 11:
When dividing 4200 by 664, we get 6 with a remainder of 216.
The number 6 becomes the next digit in our result. 
Result so far: 66103.706
The remainder is 216 after subtracting 3984 from 4200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

Let's proceed to step 12:
664 goes into 2160 3 times with a remainder of 168.
Put 3 as the next digit of the answer. 
Result so far: 66103.7063
If we subtract 1992 from 2160, we get 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Step 13:
The number 664 fits into 1680 2 times, leaving a remainder of 352.
Put 2 as the next digit of the answer. 
Result so far: 66103.70632
Subtracting 1328 from 1680 leaves us with 352.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

Advancing to step 14:
664 can be fit into 3520 5 times, resulting in a remainder of 200.
The number 5 becomes the next digit in our result. 
Result so far: 66103.706325
The remainder is 200 after subtracting 3320 from 3520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Step 15:
2000 divided by 664 is 3 with a remainder of 8.
The number 3 becomes the next digit in our result. 
Result so far: 66103.7063253
If we take 1992 away from 2000, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 16:
If we divide 80 by 664, we get 0 and a remainder of 80.
Use 0 as the next digit of our solution. 
Result so far: 66103.7063253
Subtracting 0 from 80 leaves us with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

The final result is 66103.7063253 with a remainder of 8e-08.