30681216 divided by 664 
The aim is to understand the frequency of 664 in 30681216.

Step 1:
3 divided by 664 is 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Include the next digit (0) from the dividend after 3, then repeat: 30 / 664

Step 2:
The number 664 fits into 30 0 times, leaving a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 30 and we're left with 30.
Append the next digit (6) from the dividend to 30 and continue with: 306 / 664

Advancing to step 3:
When dividing 306 by 664, we get 0 with a remainder of 306.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 306 and we're left with 306.
Include the next digit (8) from the dividend after 306, then repeat: 3068 / 664

Going ahead to step 4:
664 goes into 3068 4 times with a remainder of 412.
Write down 4 as next digit of the result. 
Result so far: 4.0
If we take 2656 away from 3068, we end up with 412.
Take the next digit (1) from the dividend and append it to 412, then repeat: 4121 / 664

On to step 5:
664 can be fit into 4121 6 times, resulting in a remainder of 137.
The number 6 becomes the next digit in our result. 
Result so far: 46.0
If we subtract 3984 from 4121, we get 137.
Take the next digit (2) from the dividend and append it to 137, then repeat: 1372 / 664

Step 6:
1372 divided by 664 is 2 with a remainder of 44.
Use 2 as the next digit of our solution. 
Result so far: 462.0
If we subtract 1328 from 1372, we get 44.
Include the next digit (1) from the dividend after 44, then repeat: 441 / 664

Step 7:
441 divided by 664 is 0 with a remainder of 441.
Put 0 as the next digit of the answer. 
Result so far: 4620.0
If we take 0 away from 441, we end up with 441.
Grab the next digit (6) from the dividend, add it to 441, then carry on: 4416 / 664

Step 8:
664 can be fit into 4416 6 times, resulting in a remainder of 432.
Use 6 as the next digit of our solution. 
Result so far: 46206.0
If we take 3984 away from 4416, we end up with 432.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4320, and continue the process.

Let's proceed to step 9:
664 can be fit into 4320 6 times, resulting in a remainder of 336.
Write down 6 as next digit of the result. 
Result so far: 46206.6
Subtracting 3984 from 4320 leaves us with 336.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3360, and continue the process.

Moving on to step 10:
664 can be fit into 3360 5 times, resulting in a remainder of 40.
The number 5 becomes the next digit in our result. 
Result so far: 46206.65
Subtract 3320 from 3360 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 11:
When dividing 400 by 664, we get 0 with a remainder of 400.
The next digit of our result is 0. 
Result so far: 46206.65
Subtract 0 from 400 to get 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Going ahead to step 12:
4000 divided by 664 is 6 with a remainder of 16.
Put 6 as the next digit of the answer. 
Result so far: 46206.6506
Subtract 3984 from 4000 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.

Going ahead to step 13:
If we divide 160 by 664, we get 0 and a remainder of 160.
Use 0 as the next digit of our solution. 
Result so far: 46206.6506
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.

On to step 14:
1600 divided by 664 is 2 with a remainder of 272.
Write down 2 as next digit of the result. 
Result so far: 46206.650602
Subtracting 1328 from 1600 leaves us with 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Going ahead to step 15:
664 goes into 2720 4 times with a remainder of 64.
Record the quotient 4 as the next digit in the result. 
Result so far: 46206.6506024
Deduct 2656 from 2720 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Moving on to step 16:
The number 664 fits into 640 0 times, leaving a remainder of 640.
The next digit of our result is 0. 
Result so far: 46206.6506024
Deduct 0 from 640 and we're left with 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

After the division, we end up with 46206.6506024 and a remainder of 6.4e-07.