We're dividing 405235 by 39 
We want to divide 405235 by 39.

Advancing to step 1:
The number 39 fits into 4 0 times, leaving a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Fetch the next digit (0) from the dividend, attach it to 4 and continue: 40 / 39

Moving on to step 2:
When dividing 40 by 39, we get 1 with a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 1 after subtracting 39 from 40.
Fetch the next digit (5) from the dividend, attach it to 1 and continue: 15 / 39

Let's proceed to step 3:
39 can be fit into 15 0 times, resulting in a remainder of 15.
Write down 0 as next digit of the result. 
Result so far: 10.0
If we subtract 0 from 15, we get 15.
Append the next digit (2) from the dividend to 15 and continue with: 152 / 39

Moving on to step 4:
39 can be fit into 152 3 times, resulting in a remainder of 35.
Put 3 as the next digit of the answer. 
Result so far: 103.0
Deduct 117 from 152 and we're left with 35.
Grab the next digit (3) from the dividend, add it to 35, then carry on: 353 / 39

Step 5:
353 divided by 39 is 9 with a remainder of 2.
The number 9 becomes the next digit in our result. 
Result so far: 1039.0
The remainder is 2 after subtracting 351 from 353.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 39

Moving on to step 6:
The number 39 fits into 25 0 times, leaving a remainder of 25.
Record the quotient 0 as the next digit in the result. 
Result so far: 10390.0
If we take 0 away from 25, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Moving on to step 7:
39 can be fit into 250 6 times, resulting in a remainder of 16.
Write down 6 as next digit of the result. 
Result so far: 10390.6
If we take 234 away from 250, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 8:
If we divide 160 by 39, we get 4 and a remainder of 4.
The number 4 becomes the next digit in our result. 
Result so far: 10390.64
The remainder is 4 after subtracting 156 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 9:
The number 39 fits into 40 1 times, leaving a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 10390.641
If we take 39 away from 40, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 10:
10 divided by 39 is 0 with a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 10390.641
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 11:
The number 39 fits into 100 2 times, leaving a remainder of 22.
Record the quotient 2 as the next digit in the result. 
Result so far: 10390.64102
If we take 78 away from 100, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 12:
220 divided by 39 is 5 with a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 10390.641025
Subtract 195 from 220 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Going ahead to step 13:
39 can be fit into 250 6 times, resulting in a remainder of 16.
The number 6 becomes the next digit in our result. 
Result so far: 10390.6410256
Deduct 234 from 250 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 14:
39 goes into 160 4 times with a remainder of 4.
Record the quotient 4 as the next digit in the result. 
Result so far: 10390.64102564
The remainder is 4 after subtracting 156 from 160.
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 10390.64102564, with a leftover of 4e-09.