863123 divided by 39 
Let's see how many times 39 fits into 863123.

Step 1:
8 divided by 39 is 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 39

Step 2:
The number 39 fits into 86 2 times, leaving a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 8 after subtracting 78 from 86.
Grab the next digit (3) from the dividend, add it to 8, then carry on: 83 / 39

Step 3:
When dividing 83 by 39, we get 2 with a remainder of 5.
Put 2 as the next digit of the answer. 
Result so far: 22.0
If we take 78 away from 83, we end up with 5.
Take the next digit (1) from the dividend and append it to 5, then repeat: 51 / 39

Step 4:
The number 39 fits into 51 1 times, leaving a remainder of 12.
Put 1 as the next digit of the answer. 
Result so far: 221.0
If we take 39 away from 51, we end up with 12.
Bring next digit (2) of the dividend behind the 12 and repeat the process: 122 / 39

Let's proceed to step 5:
39 goes into 122 3 times with a remainder of 5.
The next digit of our result is 3. 
Result so far: 2213.0
Deduct 117 from 122 and we're left with 5.
Bring next digit (3) of the dividend behind the 5 and repeat the process: 53 / 39

Moving on to step 6:
53 divided by 39 is 1 with a remainder of 14.
The next digit of our result is 1. 
Result so far: 22131.0
If we take 39 away from 53, 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.

Moving on to step 7:
When dividing 140 by 39, we get 3 with a remainder of 23.
Write down 3 as next digit of the result. 
Result so far: 22131.3
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.

Advancing to step 8:
If we divide 230 by 39, we get 5 and a remainder of 35.
The number 5 becomes the next digit in our result. 
Result so far: 22131.35
Deduct 195 from 230 and we're left 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.

Step 9:
39 goes into 350 8 times with a remainder of 38.
Put 8 as the next digit of the answer. 
Result so far: 22131.358
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 10:
If we divide 380 by 39, we get 9 and a remainder of 29.
The number 9 becomes the next digit in our result. 
Result so far: 22131.3589
Deduct 351 from 380 and we're left 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 11:
290 divided by 39 is 7 with a remainder of 17.
The next digit of our result is 7. 
Result so far: 22131.35897
The remainder is 17 after subtracting 273 from 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 12:
39 can be fit into 170 4 times, resulting in a remainder of 14.
Write down 4 as next digit of the result. 
Result so far: 22131.358974
Subtracting 156 from 170 leaves us 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.

Going ahead to step 13:
If we divide 140 by 39, we get 3 and a remainder of 23.
Use 3 as the next digit of our solution. 
Result so far: 22131.3589743
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.

Step 14:
39 can be fit into 230 5 times, resulting in a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 22131.35897435
Subtract 195 from 230 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

The quotient of the division is 22131.35897435, and the remainder is 3.5e-08.