407439 ÷ 39 
We're looking to find how many times 39 goes into 407439.

Moving on to step 1:
When dividing 4 by 39, we get 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Take the next digit (0) from the dividend and append it to 4, then repeat: 40 / 39

Let's proceed to step 2:
39 goes into 40 1 times with 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.
Fetch the next digit (7) from the dividend, attach it to 1 and continue: 17 / 39

Step 3:
39 can be fit into 17 0 times, resulting in a remainder of 17.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
If we subtract 0 from 17, we get 17.
Fetch the next digit (4) from the dividend, attach it to 17 and continue: 174 / 39

Let's proceed to step 4:
174 divided by 39 is 4 with a remainder of 18.
The number 4 becomes the next digit in our result. 
Result so far: 104.0
Deduct 156 from 174 and we're left with 18.
Include the next digit (3) from the dividend after 18, then repeat: 183 / 39

Step 5:
When dividing 183 by 39, we get 4 with a remainder of 27.
The number 4 becomes the next digit in our result. 
Result so far: 1044.0
Deduct 156 from 183 and we're left with 27.
Append the next digit (9) from the dividend to 27 and continue with: 279 / 39

Moving on to step 6:
39 goes into 279 7 times with a remainder of 6.
Put 7 as the next digit of the answer. 
Result so far: 10447.0
Deduct 273 from 279 and we're left 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.

On to step 7:
39 can be fit into 60 1 times, resulting in a remainder of 21.
The number 1 becomes the next digit in our result. 
Result so far: 10447.1
If we subtract 39 from 60, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Step 8:
39 goes into 210 5 times with a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 10447.15
If we subtract 195 from 210, we 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.

Advancing to step 9:
150 divided by 39 is 3 with a remainder of 33.
Record the quotient 3 as the next digit in the result. 
Result so far: 10447.153
If we take 117 away from 150, we end up 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.

Moving on to step 10:
If we divide 330 by 39, we get 8 and a remainder of 18.
The number 8 becomes the next digit in our result. 
Result so far: 10447.1538
Deduct 312 from 330 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 11:
The number 39 fits into 180 4 times, leaving a remainder of 24.
The next digit of our result is 4. 
Result so far: 10447.15384
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.

Moving on to step 12:
If we divide 240 by 39, we get 6 and a remainder of 6.
Put 6 as the next digit of the answer. 
Result so far: 10447.153846
Subtract 234 from 240 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 13:
When dividing 60 by 39, we get 1 with a remainder of 21.
Put 1 as the next digit of the answer. 
Result so far: 10447.1538461
Deduct 39 from 60 and we're left 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.

Let's proceed to step 14:
If we divide 210 by 39, we get 5 and a remainder of 15.
The next digit of our result is 5. 
Result so far: 10447.15384615
If we take 195 away from 210, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

The quotient of the division is 10447.15384615, and the remainder is 1.5e-08.