We're dividing 66624541 by 396 
The aim is to understand the frequency of 396 in 66624541.

Let's proceed to step 1:
6 divided by 396 is 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 396

Let's proceed to step 2:
If we divide 66 by 396, we get 0 and a remainder of 66.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 66 to get 66.
Append the next digit (6) from the dividend to 66 and continue with: 666 / 396

Moving on to step 3:
396 goes into 666 1 times with a remainder of 270.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 396 from 666, we get 270.
Grab the next digit (2) from the dividend, add it to 270, then carry on: 2702 / 396

On to step 4:
396 can be fit into 2702 6 times, resulting in a remainder of 326.
Write down 6 as next digit of the result. 
Result so far: 16.0
Subtracting 2376 from 2702 leaves us with 326.
Append the next digit (4) from the dividend to 326 and continue with: 3264 / 396

Moving on to step 5:
If we divide 3264 by 396, we get 8 and a remainder of 96.
Use 8 as the next digit of our solution. 
Result so far: 168.0
Deduct 3168 from 3264 and we're left with 96.
Fetch the next digit (5) from the dividend, attach it to 96 and continue: 965 / 396

Let's proceed to step 6:
396 goes into 965 2 times with a remainder of 173.
The number 2 becomes the next digit in our result. 
Result so far: 1682.0
Subtracting 792 from 965 leaves us with 173.
Append the next digit (4) from the dividend to 173 and continue with: 1734 / 396

Advancing to step 7:
The number 396 fits into 1734 4 times, leaving a remainder of 150.
Use 4 as the next digit of our solution. 
Result so far: 16824.0
Subtract 1584 from 1734 to get 150.
Take the next digit (1) from the dividend and append it to 150, then repeat: 1501 / 396

Advancing to step 8:
1501 divided by 396 is 3 with a remainder of 313.
The number 3 becomes the next digit in our result. 
Result so far: 168243.0
Subtract 1188 from 1501 to get 313.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3130, and continue the process.

Going ahead to step 9:
3130 divided by 396 is 7 with a remainder of 358.
Write down 7 as next digit of the result. 
Result so far: 168243.7
The remainder is 358 after subtracting 2772 from 3130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3580, and continue the process.

On to step 10:
3580 divided by 396 is 9 with a remainder of 16.
The next digit of our result is 9. 
Result so far: 168243.79
Subtracting 3564 from 3580 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 11:
396 can be fit into 160 0 times, resulting in a remainder of 160.
Put 0 as the next digit of the answer. 
Result so far: 168243.79
Subtracting 0 from 160 leaves us with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

On to step 12:
When dividing 1600 by 396, we get 4 with a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 168243.7904
Subtract 1584 from 1600 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 13:
When dividing 160 by 396, we get 0 with a remainder of 160.
Use 0 as the next digit of our solution. 
Result so far: 168243.7904
Subtracting 0 from 160 leaves us with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Moving on to step 14:
The number 396 fits into 1600 4 times, leaving a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 168243.790404
Deduct 1584 from 1600 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 15:
396 goes into 160 0 times with a remainder of 160.
Put 0 as the next digit of the answer. 
Result so far: 168243.790404
Deduct 0 from 160 and we're left with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Advancing to step 16:
The number 396 fits into 1600 4 times, leaving a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 168243.79040404
If we subtract 1584 from 1600, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

The final outcome is 168243.79040404, with a leftover of 1.6e-08.