We divide 303596 by 39
The aim is to understand the frequency of 39 in 303596.

Step 1:
When dividing 3 by 39, we get 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Grab the next digit (0) from the dividend, add it to 3, then carry on: 30 / 39

Advancing to step 2:
When dividing 30 by 39, we get 0 with a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 30, we end up with 30.
Grab the next digit (3) from the dividend, add it to 30, then carry on: 303 / 39

Going ahead to step 3:
When dividing 303 by 39, we get 7 with a remainder of 30.
Write down 7 as next digit of the result. 
Result so far: 7.0
The remainder is 30 after subtracting 273 from 303.
Take the next digit (5) from the dividend and append it to 30, then repeat: 305 / 39

Moving on to step 4:
305 divided by 39 is 7 with a remainder of 32.
Record the quotient 7 as the next digit in the result. 
Result so far: 77.0
The remainder is 32 after subtracting 273 from 305.
Include the next digit (9) from the dividend after 32, then repeat: 329 / 39

Step 5:
329 divided by 39 is 8 with a remainder of 17.
Use 8 as the next digit of our solution. 
Result so far: 778.0
Subtracting 312 from 329 leaves us with 17.
Bring next digit (6) of the dividend behind the 17 and repeat the process: 176 / 39

On to step 6:
The number 39 fits into 176 4 times, leaving a remainder of 20.
Record the quotient 4 as the next digit in the result. 
Result so far: 7784.0
Subtracting 156 from 176 leaves us 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.

Advancing to step 7:
39 goes into 200 5 times with a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 7784.5
If we subtract 195 from 200, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 8:
If we divide 50 by 39, we get 1 and a remainder of 11.
Write down 1 as next digit of the result. 
Result so far: 7784.51
Subtract 39 from 50 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 9:
110 divided by 39 is 2 with a remainder of 32.
The next digit of our result is 2. 
Result so far: 7784.512
The remainder is 32 after subtracting 78 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 10:
320 divided by 39 is 8 with a remainder of 8.
Put 8 as the next digit of the answer. 
Result so far: 7784.5128
Deduct 312 from 320 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 11:
If we divide 80 by 39, we get 2 and a remainder of 2.
Record the quotient 2 as the next digit in the result. 
Result so far: 7784.51282
Subtracting 78 from 80 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 12:
39 can be fit into 20 0 times, resulting in a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 7784.51282
Deduct 0 from 20 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.

On to step 13:
The number 39 fits into 200 5 times, leaving a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 7784.5128205
If we take 195 away from 200, we end up 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 14:
39 can be fit into 50 1 times, resulting in a remainder of 11.
Put 1 as the next digit of the answer. 
Result so far: 7784.51282051
Subtracting 39 from 50 leaves us with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

The final result is 7784.51282051 with a remainder of 1.1e-08.