68525185 divided by 399 
The aim is to understand the frequency of 399 in 68525185.

Moving on to step 1:
The number 399 fits into 6 0 times, leaving a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Take the next digit (8) from the dividend and append it to 6, then repeat: 68 / 399

Advancing to step 2:
399 goes into 68 0 times with a remainder of 68.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 68, we end up with 68.
Take the next digit (5) from the dividend and append it to 68, then repeat: 685 / 399

Moving on to step 3:
The number 399 fits into 685 1 times, leaving a remainder of 286.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 399 from 685, we get 286.
Include the next digit (2) from the dividend after 286, then repeat: 2862 / 399

Moving on to step 4:
399 goes into 2862 7 times with a remainder of 69.
Write down 7 as next digit of the result. 
Result so far: 17.0
If we take 2793 away from 2862, we end up with 69.
Take the next digit (5) from the dividend and append it to 69, then repeat: 695 / 399

On to step 5:
The number 399 fits into 695 1 times, leaving a remainder of 296.
Put 1 as the next digit of the answer. 
Result so far: 171.0
Subtracting 399 from 695 leaves us with 296.
Take the next digit (1) from the dividend and append it to 296, then repeat: 2961 / 399

Let's proceed to step 6:
If we divide 2961 by 399, we get 7 and a remainder of 168.
Write down 7 as next digit of the result. 
Result so far: 1717.0
If we take 2793 away from 2961, we end up with 168.
Bring next digit (8) of the dividend behind the 168 and repeat the process: 1688 / 399

Going ahead to step 7:
When dividing 1688 by 399, we get 4 with a remainder of 92.
Use 4 as the next digit of our solution. 
Result so far: 17174.0
Subtract 1596 from 1688 to get 92.
Grab the next digit (5) from the dividend, add it to 92, then carry on: 925 / 399

Step 8:
925 divided by 399 is 2 with a remainder of 127.
The number 2 becomes the next digit in our result. 
Result so far: 171742.0
Deduct 798 from 925 and we're left with 127.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1270, and continue the process.

Going ahead to step 9:
399 can be fit into 1270 3 times, resulting in a remainder of 73.
The next digit of our result is 3. 
Result so far: 171742.3
Subtracting 1197 from 1270 leaves us with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Going ahead to step 10:
399 goes into 730 1 times with a remainder of 331.
Record the quotient 1 as the next digit in the result. 
Result so far: 171742.31
If we subtract 399 from 730, we get 331.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3310, and continue the process.

Going ahead to step 11:
399 goes into 3310 8 times with a remainder of 118.
Record the quotient 8 as the next digit in the result. 
Result so far: 171742.318
If we take 3192 away from 3310, we end up with 118.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1180, and continue the process.

On to step 12:
The number 399 fits into 1180 2 times, leaving a remainder of 382.
Record the quotient 2 as the next digit in the result. 
Result so far: 171742.3182
If we take 798 away from 1180, we end up with 382.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3820, and continue the process.

Step 13:
The number 399 fits into 3820 9 times, leaving a remainder of 229.
The next digit of our result is 9. 
Result so far: 171742.31829
If we subtract 3591 from 3820, we get 229.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2290, and continue the process.

Let's proceed to step 14:
When dividing 2290 by 399, we get 5 with a remainder of 295.
Use 5 as the next digit of our solution. 
Result so far: 171742.318295
If we subtract 1995 from 2290, we get 295.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2950, and continue the process.

Step 15:
If we divide 2950 by 399, we get 7 and a remainder of 157.
Record the quotient 7 as the next digit in the result. 
Result so far: 171742.3182957
The remainder is 157 after subtracting 2793 from 2950.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1570, and continue the process.

On to step 16:
399 goes into 1570 3 times with a remainder of 373.
The number 3 becomes the next digit in our result. 
Result so far: 171742.31829573
Subtracting 1197 from 1570 leaves us with 373.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3730, and continue the process.

After the division, we end up with 171742.31829573 and a remainder of 3.73e-07.