We look at the division of 66612231 by 996 
The aim is to understand the frequency of 996 in 66612231.

Advancing to step 1:
6 divided by 996 is 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 996

Step 2:
If we divide 66 by 996, we get 0 and a remainder of 66.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 66, we end up with 66.
Fetch the next digit (6) from the dividend, attach it to 66 and continue: 666 / 996

Let's proceed to step 3:
996 can be fit into 666 0 times, resulting in a remainder of 666.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 666 to get 666.
Fetch the next digit (1) from the dividend, attach it to 666 and continue: 6661 / 996

Moving on to step 4:
When dividing 6661 by 996, we get 6 with a remainder of 685.
Write down 6 as next digit of the result. 
Result so far: 6.0
If we subtract 5976 from 6661, we get 685.
Take the next digit (2) from the dividend and append it to 685, then repeat: 6852 / 996

Advancing to step 5:
The number 996 fits into 6852 6 times, leaving a remainder of 876.
Record the quotient 6 as the next digit in the result. 
Result so far: 66.0
Deduct 5976 from 6852 and we're left with 876.
Include the next digit (2) from the dividend after 876, then repeat: 8762 / 996

Let's proceed to step 6:
996 goes into 8762 8 times with a remainder of 794.
Put 8 as the next digit of the answer. 
Result so far: 668.0
Subtract 7968 from 8762 to get 794.
Fetch the next digit (3) from the dividend, attach it to 794 and continue: 7943 / 996

Let's proceed to step 7:
When dividing 7943 by 996, we get 7 with a remainder of 971.
The next digit of our result is 7. 
Result so far: 6687.0
If we take 6972 away from 7943, we end up with 971.
Take the next digit (1) from the dividend and append it to 971, then repeat: 9711 / 996

Let's proceed to step 8:
When dividing 9711 by 996, we get 9 with a remainder of 747.
Record the quotient 9 as the next digit in the result. 
Result so far: 66879.0
The remainder is 747 after subtracting 8964 from 9711.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7470, and continue the process.

Advancing to step 9:
If we divide 7470 by 996, we get 7 and a remainder of 498.
Use 7 as the next digit of our solution. 
Result so far: 66879.7
Subtracting 6972 from 7470 leaves us with 498.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4980, and continue the process.

Moving on to step 10:
When dividing 4980 by 996, we get 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 66879.75
If we take 4980 away from 4980, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 11:
When dividing 0 by 996, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 66879.75
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 12:
0 divided by 996 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 66879.75
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 66879.75 with a remainder of 0.0.