66281943 ÷ 996 
The aim is to understand the frequency of 996 in 66281943.

On to step 1:
When dividing 6 by 996, we get 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 996

Going ahead to step 2:
996 can be fit into 66 0 times, resulting in a remainder of 66.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 66 after subtracting 0 from 66.
Bring next digit (2) of the dividend behind the 66 and repeat the process: 662 / 996

Step 3:
When dividing 662 by 996, we get 0 with a remainder of 662.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 662, we get 662.
Bring next digit (8) of the dividend behind the 662 and repeat the process: 6628 / 996

Moving on to step 4:
When dividing 6628 by 996, we get 6 with a remainder of 652.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Subtract 5976 from 6628 to get 652.
Take the next digit (1) from the dividend and append it to 652, then repeat: 6521 / 996

Advancing to step 5:
When dividing 6521 by 996, we get 6 with a remainder of 545.
Record the quotient 6 as the next digit in the result. 
Result so far: 66.0
Deduct 5976 from 6521 and we're left with 545.
Fetch the next digit (9) from the dividend, attach it to 545 and continue: 5459 / 996

Going ahead to step 6:
When dividing 5459 by 996, we get 5 with a remainder of 479.
Record the quotient 5 as the next digit in the result. 
Result so far: 665.0
Subtract 4980 from 5459 to get 479.
Include the next digit (4) from the dividend after 479, then repeat: 4794 / 996

Advancing to step 7:
4794 divided by 996 is 4 with a remainder of 810.
Put 4 as the next digit of the answer. 
Result so far: 6654.0
Subtracting 3984 from 4794 leaves us with 810.
Fetch the next digit (3) from the dividend, attach it to 810 and continue: 8103 / 996

On to step 8:
If we divide 8103 by 996, we get 8 and a remainder of 135.
Put 8 as the next digit of the answer. 
Result so far: 66548.0
If we take 7968 away from 8103, we end up with 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Going ahead to step 9:
When dividing 1350 by 996, we get 1 with a remainder of 354.
Use 1 as the next digit of our solution. 
Result so far: 66548.1
If we subtract 996 from 1350, we get 354.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3540, and continue the process.

Moving on to step 10:
If we divide 3540 by 996, we get 3 and a remainder of 552.
Put 3 as the next digit of the answer. 
Result so far: 66548.13
Subtracting 2988 from 3540 leaves us with 552.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5520, and continue the process.

Advancing to step 11:
996 can be fit into 5520 5 times, resulting in a remainder of 540.
Put 5 as the next digit of the answer. 
Result so far: 66548.135
Subtracting 4980 from 5520 leaves us with 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

Advancing to step 12:
5400 divided by 996 is 5 with a remainder of 420.
The number 5 becomes the next digit in our result. 
Result so far: 66548.1355
If we take 4980 away from 5400, we end up 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.

The final result is 66548.1355 with a remainder of 0.0042.