393488 divided by 39 
We want to divide 393488 by 39.

On to step 1:
3 divided by 39 is 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 39

Advancing to step 2:
The number 39 fits into 39 1 times, leaving a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 0 after subtracting 39 from 39.
Append the next digit (3) from the dividend to 0 and continue with: 3 / 39

Going ahead to step 3:
When dividing 3 by 39, we get 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 10.0
If we subtract 0 from 3, we get 3.
Fetch the next digit (4) from the dividend, attach it to 3 and continue: 34 / 39

Going ahead to step 4:
39 goes into 34 0 times with a remainder of 34.
Record the quotient 0 as the next digit in the result. 
Result so far: 100.0
If we subtract 0 from 34, we get 34.
Fetch the next digit (8) from the dividend, attach it to 34 and continue: 348 / 39

Going ahead to step 5:
The number 39 fits into 348 8 times, leaving a remainder of 36.
Put 8 as the next digit of the answer. 
Result so far: 1008.0
Deduct 312 from 348 and we're left with 36.
Include the next digit (8) from the dividend after 36, then repeat: 368 / 39

Let's proceed to step 6:
39 goes into 368 9 times with a remainder of 17.
Put 9 as the next digit of the answer. 
Result so far: 10089.0
The remainder is 17 after subtracting 351 from 368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 7:
If we divide 170 by 39, we get 4 and a remainder of 14.
Use 4 as the next digit of our solution. 
Result so far: 10089.4
Deduct 156 from 170 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 8:
The number 39 fits into 140 3 times, leaving a remainder of 23.
Use 3 as the next digit of our solution. 
Result so far: 10089.43
The remainder is 23 after subtracting 117 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Let's proceed to step 9:
The number 39 fits into 230 5 times, leaving a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 10089.435
If we take 195 away from 230, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Let's proceed to step 10:
If we divide 350 by 39, we get 8 and a remainder of 38.
The number 8 becomes the next digit in our result. 
Result so far: 10089.4358
Subtract 312 from 350 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Let's proceed to step 11:
When dividing 380 by 39, we get 9 with a remainder of 29.
Use 9 as the next digit of our solution. 
Result so far: 10089.43589
If we take 351 away from 380, we end up with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Step 12:
When dividing 290 by 39, we get 7 with a remainder of 17.
Use 7 as the next digit of our solution. 
Result so far: 10089.435897
If we take 273 away from 290, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 13:
170 divided by 39 is 4 with a remainder of 14.
Put 4 as the next digit of the answer. 
Result so far: 10089.4358974
If we take 156 away from 170, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 14:
If we divide 140 by 39, we get 3 and a remainder of 23.
The next digit of our result is 3. 
Result so far: 10089.43589743
Subtract 117 from 140 to get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

After the division, we end up with 10089.43589743 and a remainder of 2.3e-08.