We divide 355603 by 39
The aim is to understand the frequency of 39 in 355603.

On to step 1:
When dividing 3 by 39, we get 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Include the next digit (5) from the dividend after 3, then repeat: 35 / 39

Advancing to step 2:
39 can be fit into 35 0 times, resulting in a remainder of 35.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 35, we get 35.
Fetch the next digit (5) from the dividend, attach it to 35 and continue: 355 / 39

Step 3:
The number 39 fits into 355 9 times, leaving a remainder of 4.
Put 9 as the next digit of the answer. 
Result so far: 9.0
Subtracting 351 from 355 leaves us with 4.
Grab the next digit (6) from the dividend, add it to 4, then carry on: 46 / 39

Advancing to step 4:
39 goes into 46 1 times with a remainder of 7.
Use 1 as the next digit of our solution. 
Result so far: 91.0
Subtract 39 from 46 to get 7.
Include the next digit (0) from the dividend after 7, then repeat: 70 / 39

On to step 5:
39 can be fit into 70 1 times, resulting in a remainder of 31.
Record the quotient 1 as the next digit in the result. 
Result so far: 911.0
The remainder is 31 after subtracting 39 from 70.
Include the next digit (3) from the dividend after 31, then repeat: 313 / 39

Moving on to step 6:
39 can be fit into 313 8 times, resulting in a remainder of 1.
Write down 8 as next digit of the result. 
Result so far: 9118.0
Subtract 312 from 313 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 7:
The number 39 fits into 10 0 times, leaving a remainder of 10.
The next digit of our result is 0. 
Result so far: 9118.0
If we take 0 away from 10, we end up 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.

On to step 8:
When dividing 100 by 39, we get 2 with a remainder of 22.
Record the quotient 2 as the next digit in the result. 
Result so far: 9118.02
The remainder is 22 after subtracting 78 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 9:
220 divided by 39 is 5 with a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 9118.025
If we take 195 away from 220, we end up 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 10:
If we divide 250 by 39, we get 6 and a remainder of 16.
Put 6 as the next digit of the answer. 
Result so far: 9118.0256
If we subtract 234 from 250, we 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 11:
When dividing 160 by 39, we get 4 with a remainder of 4.
Put 4 as the next digit of the answer. 
Result so far: 9118.02564
The remainder is 4 after subtracting 156 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 12:
40 divided by 39 is 1 with a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 9118.025641
Subtracting 39 from 40 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 13:
39 goes into 10 0 times with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 9118.025641
Deduct 0 from 10 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.

Moving on to step 14:
39 goes into 100 2 times with a remainder of 22.
The next digit of our result is 2. 
Result so far: 9118.02564102
Subtracting 78 from 100 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Our division results in 9118.02564102 with a remaining 2.2e-08.