Let's divide 12429259 by 809
The aim is to understand the frequency of 809 in 12429259.

Let's proceed to step 1:
The number 809 fits into 1 0 times, leaving a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 809

Going ahead to step 2:
If we divide 12 by 809, we get 0 and a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Append the next digit (4) from the dividend to 12 and continue with: 124 / 809

Advancing to step 3:
124 divided by 809 is 0 with a remainder of 124.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 124 leaves us with 124.
Include the next digit (2) from the dividend after 124, then repeat: 1242 / 809

Going ahead to step 4:
809 goes into 1242 1 times with a remainder of 433.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 809 from 1242 and we're left with 433.
Grab the next digit (9) from the dividend, add it to 433, then carry on: 4339 / 809

Moving on to step 5:
4339 divided by 809 is 5 with a remainder of 294.
Use 5 as the next digit of our solution. 
Result so far: 15.0
The remainder is 294 after subtracting 4045 from 4339.
Include the next digit (2) from the dividend after 294, then repeat: 2942 / 809

Let's proceed to step 6:
If we divide 2942 by 809, we get 3 and a remainder of 515.
Write down 3 as next digit of the result. 
Result so far: 153.0
The remainder is 515 after subtracting 2427 from 2942.
Grab the next digit (5) from the dividend, add it to 515, then carry on: 5155 / 809

On to step 7:
809 goes into 5155 6 times with a remainder of 301.
Put 6 as the next digit of the answer. 
Result so far: 1536.0
If we take 4854 away from 5155, we end up with 301.
Take the next digit (9) from the dividend and append it to 301, then repeat: 3019 / 809

Advancing to step 8:
When dividing 3019 by 809, we get 3 with a remainder of 592.
The next digit of our result is 3. 
Result so far: 15363.0
The remainder is 592 after subtracting 2427 from 3019.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5920, and continue the process.

Moving on to step 9:
When dividing 5920 by 809, we get 7 with a remainder of 257.
The number 7 becomes the next digit in our result. 
Result so far: 15363.7
Subtract 5663 from 5920 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 10:
The number 809 fits into 2570 3 times, leaving a remainder of 143.
The number 3 becomes the next digit in our result. 
Result so far: 15363.73
Deduct 2427 from 2570 and we're left 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.

Advancing to step 11:
1430 divided by 809 is 1 with a remainder of 621.
Record the quotient 1 as the next digit in the result. 
Result so far: 15363.731
Subtracting 809 from 1430 leaves us with 621.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6210, and continue the process.

Step 12:
When dividing 6210 by 809, we get 7 with a remainder of 547.
Write down 7 as next digit of the result. 
Result so far: 15363.7317
Deduct 5663 from 6210 and we're left with 547.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5470, and continue the process.

Step 13:
5470 divided by 809 is 6 with a remainder of 616.
Use 6 as the next digit of our solution. 
Result so far: 15363.73176
The remainder is 616 after subtracting 4854 from 5470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6160, and continue the process.

Let's proceed to step 14:
When dividing 6160 by 809, we get 7 with a remainder of 497.
Use 7 as the next digit of our solution. 
Result so far: 15363.731767
If we subtract 5663 from 6160, we get 497.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4970, and continue the process.

Going ahead to step 15:
4970 divided by 809 is 6 with a remainder of 116.
Put 6 as the next digit of the answer. 
Result so far: 15363.7317676
The remainder is 116 after subtracting 4854 from 4970.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

On to step 16:
When dividing 1160 by 809, we get 1 with a remainder of 351.
The next digit of our result is 1. 
Result so far: 15363.73176761
Deduct 809 from 1160 and we're left with 351.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3510, and continue the process.

Our division results in 15363.73176761 with a remaining 3.51e-07.