We divide 412259 by 3
Let's see how many times 3 fits into 412259.

Let's proceed to step 1:
If we divide 4 by 3, we get 1 and a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 3 away from 4, we end up with 1.
Fetch the next digit (1) from the dividend, attach it to 1 and continue: 11 / 3

Going ahead to step 2:
3 goes into 11 3 times with a remainder of 2.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
Deduct 9 from 11 and we're left with 2.
Fetch the next digit (2) from the dividend, attach it to 2 and continue: 22 / 3

Going ahead to step 3:
22 divided by 3 is 7 with a remainder of 1.
Write down 7 as next digit of the result. 
Result so far: 137.0
If we take 21 away from 22, we end up with 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 3

On to step 4:
3 can be fit into 12 4 times, resulting in a remainder of 0.
Record the quotient 4 as the next digit in the result. 
Result so far: 1374.0
If we subtract 12 from 12, we get 0.
Append the next digit (5) from the dividend to 0 and continue with: 5 / 3

Step 5:
If we divide 5 by 3, we get 1 and a remainder of 2.
Use 1 as the next digit of our solution. 
Result so far: 13741.0
The remainder is 2 after subtracting 3 from 5.
Fetch the next digit (9) from the dividend, attach it to 2 and continue: 29 / 3

Advancing to step 6:
29 divided by 3 is 9 with a remainder of 2.
Write down 9 as next digit of the result. 
Result so far: 137419.0
Deduct 27 from 29 and we're left 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.

Moving on to step 7:
3 goes into 20 6 times with a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 137419.6
Subtract 18 from 20 to 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.

On to step 8:
20 divided by 3 is 6 with a remainder of 2.
Use 6 as the next digit of our solution. 
Result so far: 137419.66
Deduct 18 from 20 and we're left 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 137419.66, with a leftover of 0.002.