Let's divide 409869 by 39
Our goal is to divide 409869 by 39.

Advancing to step 1:
4 divided by 39 is 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Fetch the next digit (0) from the dividend, attach it to 4 and continue: 40 / 39

Moving on to step 2:
39 can be fit into 40 1 times, resulting in a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 39 away from 40, we end up with 1.
Append the next digit (9) from the dividend to 1 and continue with: 19 / 39

On to step 3:
If we divide 19 by 39, we get 0 and a remainder of 19.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
If we subtract 0 from 19, we get 19.
Bring next digit (8) of the dividend behind the 19 and repeat the process: 198 / 39

Going ahead to step 4:
39 can be fit into 198 5 times, resulting in a remainder of 3.
Write down 5 as next digit of the result. 
Result so far: 105.0
Deduct 195 from 198 and we're left with 3.
Grab the next digit (6) from the dividend, add it to 3, then carry on: 36 / 39

Let's proceed to step 5:
39 can be fit into 36 0 times, resulting in a remainder of 36.
Use 0 as the next digit of our solution. 
Result so far: 1050.0
The remainder is 36 after subtracting 0 from 36.
Append the next digit (9) from the dividend to 36 and continue with: 369 / 39

Advancing to step 6:
39 can be fit into 369 9 times, resulting in a remainder of 18.
The number 9 becomes the next digit in our result. 
Result so far: 10509.0
If we subtract 351 from 369, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 7:
180 divided by 39 is 4 with a remainder of 24.
Put 4 as the next digit of the answer. 
Result so far: 10509.4
Subtract 156 from 180 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 8:
The number 39 fits into 240 6 times, leaving a remainder of 6.
Use 6 as the next digit of our solution. 
Result so far: 10509.46
Subtracting 234 from 240 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 9:
60 divided by 39 is 1 with a remainder of 21.
The number 1 becomes the next digit in our result. 
Result so far: 10509.461
Subtracting 39 from 60 leaves us with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Going ahead to step 10:
39 can be fit into 210 5 times, resulting in a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 10509.4615
Subtract 195 from 210 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 11:
150 divided by 39 is 3 with a remainder of 33.
The number 3 becomes the next digit in our result. 
Result so far: 10509.46153
Subtracting 117 from 150 leaves us with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Let's proceed to step 12:
If we divide 330 by 39, we get 8 and a remainder of 18.
The next digit of our result is 8. 
Result so far: 10509.461538
If we subtract 312 from 330, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Advancing to step 13:
180 divided by 39 is 4 with a remainder of 24.
The number 4 becomes the next digit in our result. 
Result so far: 10509.4615384
Subtracting 156 from 180 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 14:
39 can be fit into 240 6 times, resulting in a remainder of 6.
Use 6 as the next digit of our solution. 
Result so far: 10509.46153846
Subtracting 234 from 240 leaves us with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

The final outcome is 10509.46153846, with a leftover of 6e-09.