We look at the division of 12454472 by 309 
The aim is to understand the frequency of 309 in 12454472.

Going ahead to step 1:
If we divide 1 by 309, we get 0 and a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 309

Moving on to step 2:
If we divide 12 by 309, we get 0 and a remainder of 12.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 12 after subtracting 0 from 12.
Grab the next digit (4) from the dividend, add it to 12, then carry on: 124 / 309

Let's proceed to step 3:
309 can be fit into 124 0 times, resulting in a remainder of 124.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 124 to get 124.
Append the next digit (5) from the dividend to 124 and continue with: 1245 / 309

On to step 4:
309 goes into 1245 4 times with a remainder of 9.
Write down 4 as next digit of the result. 
Result so far: 4.0
The remainder is 9 after subtracting 1236 from 1245.
Include the next digit (4) from the dividend after 9, then repeat: 94 / 309

Going ahead to step 5:
The number 309 fits into 94 0 times, leaving a remainder of 94.
Record the quotient 0 as the next digit in the result. 
Result so far: 40.0
Deduct 0 from 94 and we're left with 94.
Take the next digit (4) from the dividend and append it to 94, then repeat: 944 / 309

Let's proceed to step 6:
944 divided by 309 is 3 with a remainder of 17.
Write down 3 as next digit of the result. 
Result so far: 403.0
Subtract 927 from 944 to get 17.
Bring next digit (7) of the dividend behind the 17 and repeat the process: 177 / 309

Let's proceed to step 7:
309 goes into 177 0 times with a remainder of 177.
Write down 0 as next digit of the result. 
Result so far: 4030.0
If we take 0 away from 177, we end up with 177.
Append the next digit (2) from the dividend to 177 and continue with: 1772 / 309

Step 8:
The number 309 fits into 1772 5 times, leaving a remainder of 227.
Use 5 as the next digit of our solution. 
Result so far: 40305.0
Deduct 1545 from 1772 and we're left with 227.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2270, and continue the process.

On to step 9:
309 can be fit into 2270 7 times, resulting in a remainder of 107.
Use 7 as the next digit of our solution. 
Result so far: 40305.7
The remainder is 107 after subtracting 2163 from 2270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1070, and continue the process.

Going ahead to step 10:
309 can be fit into 1070 3 times, resulting in a remainder of 143.
Use 3 as the next digit of our solution. 
Result so far: 40305.73
If we take 927 away from 1070, we end up with 143.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1430, and continue the process.

Going ahead to step 11:
309 can be fit into 1430 4 times, resulting in a remainder of 194.
Record the quotient 4 as the next digit in the result. 
Result so far: 40305.734
The remainder is 194 after subtracting 1236 from 1430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1940, and continue the process.

Step 12:
When dividing 1940 by 309, we get 6 with a remainder of 86.
Write down 6 as next digit of the result. 
Result so far: 40305.7346
The remainder is 86 after subtracting 1854 from 1940.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

On to step 13:
309 goes into 860 2 times with a remainder of 242.
Put 2 as the next digit of the answer. 
Result so far: 40305.73462
If we take 618 away from 860, we end up with 242.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2420, and continue the process.

Moving on to step 14:
2420 divided by 309 is 7 with a remainder of 257.
The number 7 becomes the next digit in our result. 
Result so far: 40305.734627
Subtract 2163 from 2420 to get 257.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2570, and continue the process.

Moving on to step 15:
2570 divided by 309 is 8 with a remainder of 98.
Use 8 as the next digit of our solution. 
Result so far: 40305.7346278
If we subtract 2472 from 2570, we get 98.
Since there are no more digits in the dividend, we add a zero to the remainder making it 980, and continue the process.

Going ahead to step 16:
If we divide 980 by 309, we get 3 and a remainder of 53.
Use 3 as the next digit of our solution. 
Result so far: 40305.73462783
Deduct 927 from 980 and we're left with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

After the division, we end up with 40305.73462783 and a remainder of 5.3e-08.