We're dividing 48097968 by 399 
The aim is to understand the frequency of 399 in 48097968.

Moving on to step 1:
399 goes into 4 0 times with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Bring next digit (8) of the dividend behind the 4 and repeat the process: 48 / 399

Moving on to step 2:
When dividing 48 by 399, we get 0 with a remainder of 48.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 48 and we're left with 48.
Bring next digit (0) of the dividend behind the 48 and repeat the process: 480 / 399

Moving on to step 3:
399 can be fit into 480 1 times, resulting in a remainder of 81.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 81 after subtracting 399 from 480.
Append the next digit (9) from the dividend to 81 and continue with: 819 / 399

Let's proceed to step 4:
When dividing 819 by 399, we get 2 with a remainder of 21.
Write down 2 as next digit of the result. 
Result so far: 12.0
Deduct 798 from 819 and we're left with 21.
Fetch the next digit (7) from the dividend, attach it to 21 and continue: 217 / 399

On to step 5:
If we divide 217 by 399, we get 0 and a remainder of 217.
Record the quotient 0 as the next digit in the result. 
Result so far: 120.0
Deduct 0 from 217 and we're left with 217.
Bring next digit (9) of the dividend behind the 217 and repeat the process: 2179 / 399

Going ahead to step 6:
When dividing 2179 by 399, we get 5 with a remainder of 184.
Use 5 as the next digit of our solution. 
Result so far: 1205.0
Subtracting 1995 from 2179 leaves us with 184.
Append the next digit (6) from the dividend to 184 and continue with: 1846 / 399

Going ahead to step 7:
399 goes into 1846 4 times with a remainder of 250.
The number 4 becomes the next digit in our result. 
Result so far: 12054.0
Subtract 1596 from 1846 to get 250.
Grab the next digit (8) from the dividend, add it to 250, then carry on: 2508 / 399

Moving on to step 8:
2508 divided by 399 is 6 with a remainder of 114.
The next digit of our result is 6. 
Result so far: 120546.0
If we take 2394 away from 2508, we end up with 114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Advancing to step 9:
If we divide 1140 by 399, we get 2 and a remainder of 342.
Put 2 as the next digit of the answer. 
Result so far: 120546.2
Subtract 798 from 1140 to get 342.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3420, and continue the process.

Let's proceed to step 10:
If we divide 3420 by 399, we get 8 and a remainder of 228.
Write down 8 as next digit of the result. 
Result so far: 120546.28
Deduct 3192 from 3420 and we're left with 228.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

Step 11:
The number 399 fits into 2280 5 times, leaving a remainder of 285.
Use 5 as the next digit of our solution. 
Result so far: 120546.285
Subtract 1995 from 2280 to get 285.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2850, and continue the process.

Moving on to step 12:
2850 divided by 399 is 7 with a remainder of 57.
Use 7 as the next digit of our solution. 
Result so far: 120546.2857
If we take 2793 away from 2850, we end up with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Moving on to step 13:
399 can be fit into 570 1 times, resulting in a remainder of 171.
Use 1 as the next digit of our solution. 
Result so far: 120546.28571
Subtract 399 from 570 to get 171.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1710, and continue the process.

Advancing to step 14:
399 goes into 1710 4 times with a remainder of 114.
Use 4 as the next digit of our solution. 
Result so far: 120546.285714
Deduct 1596 from 1710 and we're left with 114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Advancing to step 15:
1140 divided by 399 is 2 with a remainder of 342.
Put 2 as the next digit of the answer. 
Result so far: 120546.2857142
If we subtract 798 from 1140, we get 342.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3420, and continue the process.

Moving on to step 16:
The number 399 fits into 3420 8 times, leaving a remainder of 228.
Write down 8 as next digit of the result. 
Result so far: 120546.28571428
Subtract 3192 from 3420 to get 228.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

The final outcome is 120546.28571428, with a leftover of 2.28e-07.