Let's divide 63861 by 39
We want to divide 63861 by 39.

Step 1:
When dividing 6 by 39, we get 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 39

Step 2:
The number 39 fits into 63 1 times, leaving a remainder of 24.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 24 after subtracting 39 from 63.
Fetch the next digit (8) from the dividend, attach it to 24 and continue: 248 / 39

Let's proceed to step 3:
If we divide 248 by 39, we get 6 and a remainder of 14.
The number 6 becomes the next digit in our result. 
Result so far: 16.0
Subtracting 234 from 248 leaves us with 14.
Take the next digit (6) from the dividend and append it to 14, then repeat: 146 / 39

Moving on to step 4:
When dividing 146 by 39, we get 3 with a remainder of 29.
Put 3 as the next digit of the answer. 
Result so far: 163.0
The remainder is 29 after subtracting 117 from 146.
Fetch the next digit (1) from the dividend, attach it to 29 and continue: 291 / 39

Moving on to step 5:
When dividing 291 by 39, we get 7 with a remainder of 18.
Put 7 as the next digit of the answer. 
Result so far: 1637.0
If we take 273 away from 291, we end up 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.

Let's proceed to step 6:
The number 39 fits into 180 4 times, leaving a remainder of 24.
Use 4 as the next digit of our solution. 
Result so far: 1637.4
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.

Going ahead to step 7:
39 can be fit into 240 6 times, resulting in a remainder of 6.
The number 6 becomes the next digit in our result. 
Result so far: 1637.46
If we take 234 away from 240, we end up 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.

Moving on to step 8:
The number 39 fits into 60 1 times, leaving a remainder of 21.
Put 1 as the next digit of the answer. 
Result so far: 1637.461
Subtract 39 from 60 to 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 9:
The number 39 fits into 210 5 times, leaving a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 1637.4615
Deduct 195 from 210 and we're left 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.

Moving on to step 10:
39 can be fit into 150 3 times, resulting in a remainder of 33.
Put 3 as the next digit of the answer. 
Result so far: 1637.46153
Subtracting 117 from 150 leaves us 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.

Advancing to step 11:
39 can be fit into 330 8 times, resulting in a remainder of 18.
Record the quotient 8 as the next digit in the result. 
Result so far: 1637.461538
If we subtract 312 from 330, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 12:
If we divide 180 by 39, we get 4 and a remainder of 24.
The number 4 becomes the next digit in our result. 
Result so far: 1637.4615384
If we subtract 156 from 180, we 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.

Let's proceed to step 13:
The number 39 fits into 240 6 times, leaving a remainder of 6.
Use 6 as the next digit of our solution. 
Result so far: 1637.46153846
If we subtract 234 from 240, we 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.

The final outcome is 1637.46153846, with a leftover of 6e-09.