We're dividing 14135909 by 3 
Our goal is to divide 14135909 by 3.

Advancing to step 1:
When dividing 1 by 3, we get 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Take the next digit (4) from the dividend and append it to 1, then repeat: 14 / 3

Step 2:
3 goes into 14 4 times with a remainder of 2.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Deduct 12 from 14 and we're left with 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 3

On to step 3:
21 divided by 3 is 7 with a remainder of 0.
The next digit of our result is 7. 
Result so far: 47.0
Deduct 21 from 21 and we're left with 0.
Fetch the next digit (3) from the dividend, attach it to 0 and continue: 3 / 3

Moving on to step 4:
The number 3 fits into 3 1 times, leaving a remainder of 0.
The next digit of our result is 1. 
Result so far: 471.0
Subtracting 3 from 3 leaves us with 0.
Fetch the next digit (5) from the dividend, attach it to 0 and continue: 5 / 3

Moving on to step 5:
5 divided by 3 is 1 with a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 4711.0
Deduct 3 from 5 and we're left with 2.
Grab the next digit (9) from the dividend, add it to 2, then carry on: 29 / 3

Moving on to step 6:
3 goes into 29 9 times with a remainder of 2.
Record the quotient 9 as the next digit in the result. 
Result so far: 47119.0
Deduct 27 from 29 and we're left with 2.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 3

Advancing to step 7:
3 goes into 20 6 times with a remainder of 2.
Use 6 as the next digit of our solution. 
Result so far: 471196.0
The remainder is 2 after subtracting 18 from 20.
Append the next digit (9) from the dividend to 2 and continue with: 29 / 3

Let's proceed to step 8:
If we divide 29 by 3, we get 9 and a remainder of 2.
Put 9 as the next digit of the answer. 
Result so far: 4711969.0
If we subtract 27 from 29, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 9:
20 divided by 3 is 6 with a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 4711969.6
If we take 18 away from 20, we end up 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.

Let's proceed to step 10:
When dividing 20 by 3, we get 6 with a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 4711969.66
Subtracting 18 from 20 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.

The final outcome is 4711969.66, with a leftover of 0.002.