We divide 399408 by 35
The aim is to understand the frequency of 35 in 399408.

On to step 1:
35 goes into 3 0 times with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 35

Moving on to step 2:
35 can be fit into 39 1 times, resulting in a remainder of 4.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 35 from 39 leaves us with 4.
Take the next digit (9) from the dividend and append it to 4, then repeat: 49 / 35

Step 3:
If we divide 49 by 35, we get 1 and a remainder of 14.
Use 1 as the next digit of our solution. 
Result so far: 11.0
If we take 35 away from 49, we end up with 14.
Append the next digit (4) from the dividend to 14 and continue with: 144 / 35

On to step 4:
144 divided by 35 is 4 with a remainder of 4.
The number 4 becomes the next digit in our result. 
Result so far: 114.0
Subtract 140 from 144 to get 4.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 35

On to step 5:
The number 35 fits into 40 1 times, leaving a remainder of 5.
The number 1 becomes the next digit in our result. 
Result so far: 1141.0
Subtracting 35 from 40 leaves us with 5.
Bring next digit (8) of the dividend behind the 5 and repeat the process: 58 / 35

Moving on to step 6:
When dividing 58 by 35, we get 1 with a remainder of 23.
Record the quotient 1 as the next digit in the result. 
Result so far: 11411.0
Subtract 35 from 58 to get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Let's proceed to step 7:
35 goes into 230 6 times with a remainder of 20.
The number 6 becomes the next digit in our result. 
Result so far: 11411.6
Deduct 210 from 230 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 8:
35 can be fit into 200 5 times, resulting in a remainder of 25.
Record the quotient 5 as the next digit in the result. 
Result so far: 11411.65
Subtracting 175 from 200 leaves us with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Going ahead to step 9:
35 goes into 250 7 times with a remainder of 5.
The number 7 becomes the next digit in our result. 
Result so far: 11411.657
Deduct 245 from 250 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 10:
The number 35 fits into 50 1 times, leaving a remainder of 15.
The number 1 becomes the next digit in our result. 
Result so far: 11411.6571
If we subtract 35 from 50, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 11:
If we divide 150 by 35, we get 4 and a remainder of 10.
Record the quotient 4 as the next digit in the result. 
Result so far: 11411.65714
Deduct 140 from 150 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 12:
35 goes into 100 2 times with a remainder of 30.
Use 2 as the next digit of our solution. 
Result so far: 11411.657142
The remainder is 30 after subtracting 70 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 13:
35 goes into 300 8 times with a remainder of 20.
Record the quotient 8 as the next digit in the result. 
Result so far: 11411.6571428
If we subtract 280 from 300, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 14:
200 divided by 35 is 5 with a remainder of 25.
Record the quotient 5 as the next digit in the result. 
Result so far: 11411.65714285
Deduct 175 from 200 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

The final result is 11411.65714285 with a remainder of 2.5e-08.