39604189 divided by 309 
The aim is to understand the frequency of 309 in 39604189.

Let's proceed to step 1:
The number 309 fits into 3 0 times, leaving 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.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 309

Step 2:
309 can be fit into 39 0 times, resulting in a remainder of 39.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 39 to get 39.
Take the next digit (6) from the dividend and append it to 39, then repeat: 396 / 309

Let's proceed to step 3:
309 goes into 396 1 times with a remainder of 87.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 87 after subtracting 309 from 396.
Take the next digit (0) from the dividend and append it to 87, then repeat: 870 / 309

Step 4:
When dividing 870 by 309, we get 2 with a remainder of 252.
The next digit of our result is 2. 
Result so far: 12.0
If we subtract 618 from 870, we get 252.
Grab the next digit (4) from the dividend, add it to 252, then carry on: 2524 / 309

Let's proceed to step 5:
If we divide 2524 by 309, we get 8 and a remainder of 52.
Put 8 as the next digit of the answer. 
Result so far: 128.0
If we subtract 2472 from 2524, we get 52.
Append the next digit (1) from the dividend to 52 and continue with: 521 / 309

On to step 6:
521 divided by 309 is 1 with a remainder of 212.
The number 1 becomes the next digit in our result. 
Result so far: 1281.0
Subtracting 309 from 521 leaves us with 212.
Append the next digit (8) from the dividend to 212 and continue with: 2128 / 309

On to step 7:
309 can be fit into 2128 6 times, resulting in a remainder of 274.
Write down 6 as next digit of the result. 
Result so far: 12816.0
Deduct 1854 from 2128 and we're left with 274.
Include the next digit (9) from the dividend after 274, then repeat: 2749 / 309

On to step 8:
The number 309 fits into 2749 8 times, leaving a remainder of 277.
The number 8 becomes the next digit in our result. 
Result so far: 128168.0
If we take 2472 away from 2749, we end up with 277.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2770, and continue the process.

Step 9:
309 goes into 2770 8 times with a remainder of 298.
Write down 8 as next digit of the result. 
Result so far: 128168.8
Subtracting 2472 from 2770 leaves us with 298.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2980, and continue the process.

Let's proceed to step 10:
309 can be fit into 2980 9 times, resulting in a remainder of 199.
The next digit of our result is 9. 
Result so far: 128168.89
Deduct 2781 from 2980 and we're left with 199.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1990, and continue the process.

Moving on to step 11:
The number 309 fits into 1990 6 times, leaving a remainder of 136.
The number 6 becomes the next digit in our result. 
Result so far: 128168.896
If we subtract 1854 from 1990, we get 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Let's proceed to step 12:
The number 309 fits into 1360 4 times, leaving a remainder of 124.
Put 4 as the next digit of the answer. 
Result so far: 128168.8964
Subtract 1236 from 1360 to get 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

Moving on to step 13:
The number 309 fits into 1240 4 times, leaving a remainder of 4.
Record the quotient 4 as the next digit in the result. 
Result so far: 128168.89644
The remainder is 4 after subtracting 1236 from 1240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The final outcome is 128168.89644, with a leftover of 4e-06.