64399630 ÷ 320 
The aim is to understand the frequency of 320 in 64399630.

Let's proceed to step 1:
320 goes into 6 0 times with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 320

On to step 2:
If we divide 64 by 320, we get 0 and a remainder of 64.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 64 to get 64.
Fetch the next digit (3) from the dividend, attach it to 64 and continue: 643 / 320

Let's proceed to step 3:
320 can be fit into 643 2 times, resulting in a remainder of 3.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtract 640 from 643 to get 3.
Fetch the next digit (9) from the dividend, attach it to 3 and continue: 39 / 320

Moving on to step 4:
320 can be fit into 39 0 times, resulting in a remainder of 39.
Put 0 as the next digit of the answer. 
Result so far: 20.0
Deduct 0 from 39 and we're left with 39.
Include the next digit (9) from the dividend after 39, then repeat: 399 / 320

Step 5:
The number 320 fits into 399 1 times, leaving a remainder of 79.
The number 1 becomes the next digit in our result. 
Result so far: 201.0
If we subtract 320 from 399, we get 79.
Bring next digit (6) of the dividend behind the 79 and repeat the process: 796 / 320

Step 6:
The number 320 fits into 796 2 times, leaving a remainder of 156.
The next digit of our result is 2. 
Result so far: 2012.0
Deduct 640 from 796 and we're left with 156.
Append the next digit (3) from the dividend to 156 and continue with: 1563 / 320

Going ahead to step 7:
1563 divided by 320 is 4 with a remainder of 283.
Put 4 as the next digit of the answer. 
Result so far: 20124.0
Subtract 1280 from 1563 to get 283.
Grab the next digit (0) from the dividend, add it to 283, then carry on: 2830 / 320

Let's proceed to step 8:
2830 divided by 320 is 8 with a remainder of 270.
The number 8 becomes the next digit in our result. 
Result so far: 201248.0
The remainder is 270 after subtracting 2560 from 2830.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Step 9:
320 goes into 2700 8 times with a remainder of 140.
The next digit of our result is 8. 
Result so far: 201248.8
The remainder is 140 after subtracting 2560 from 2700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Moving on to step 10:
1400 divided by 320 is 4 with a remainder of 120.
The next digit of our result is 4. 
Result so far: 201248.84
Deduct 1280 from 1400 and we're left with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Going ahead to step 11:
If we divide 1200 by 320, we get 3 and a remainder of 240.
Put 3 as the next digit of the answer. 
Result so far: 201248.843
Subtract 960 from 1200 to get 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Let's proceed to step 12:
320 goes into 2400 7 times with a remainder of 160.
Record the quotient 7 as the next digit in the result. 
Result so far: 201248.8437
If we take 2240 away from 2400, we end up 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.

Going ahead to step 13:
1600 divided by 320 is 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 201248.84375
Subtracting 1600 from 1600 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.

Advancing to step 14:
The number 320 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 201248.84375
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.

On to step 15:
If we divide 0 by 320, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 201248.84375
If we subtract 0 from 0, we get 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 201248.84375 with a remainder of 0.0.