We're dividing 617991 by 39 
We want to figure out the number of times 617991 can be divided by 39.

Going ahead to step 1:
39 can be fit into 6 0 times, resulting in a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Bring next digit (1) of the dividend behind the 6 and repeat the process: 61 / 39

Going ahead to step 2:
39 can be fit into 61 1 times, resulting in a remainder of 22.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 39 from 61, we get 22.
Grab the next digit (7) from the dividend, add it to 22, then carry on: 227 / 39

Let's proceed to step 3:
39 can be fit into 227 5 times, resulting in a remainder of 32.
The next digit of our result is 5. 
Result so far: 15.0
The remainder is 32 after subtracting 195 from 227.
Fetch the next digit (9) from the dividend, attach it to 32 and continue: 329 / 39

On to step 4:
329 divided by 39 is 8 with a remainder of 17.
Record the quotient 8 as the next digit in the result. 
Result so far: 158.0
If we take 312 away from 329, we end up with 17.
Fetch the next digit (9) from the dividend, attach it to 17 and continue: 179 / 39

Step 5:
If we divide 179 by 39, we get 4 and a remainder of 23.
Use 4 as the next digit of our solution. 
Result so far: 1584.0
Subtracting 156 from 179 leaves us with 23.
Bring next digit (1) of the dividend behind the 23 and repeat the process: 231 / 39

Moving on to step 6:
When dividing 231 by 39, we get 5 with a remainder of 36.
Record the quotient 5 as the next digit in the result. 
Result so far: 15845.0
If we subtract 195 from 231, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 7:
If we divide 360 by 39, we get 9 and a remainder of 9.
The number 9 becomes the next digit in our result. 
Result so far: 15845.9
If we subtract 351 from 360, we get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 8:
The number 39 fits into 90 2 times, leaving a remainder of 12.
Use 2 as the next digit of our solution. 
Result so far: 15845.92
Deduct 78 from 90 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 9:
If we divide 120 by 39, we get 3 and a remainder of 3.
Record the quotient 3 as the next digit in the result. 
Result so far: 15845.923
Deduct 117 from 120 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 10:
When dividing 30 by 39, we get 0 with a remainder of 30.
The next digit of our result is 0. 
Result so far: 15845.923
Subtract 0 from 30 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 11:
39 can be fit into 300 7 times, resulting in a remainder of 27.
The next digit of our result is 7. 
Result so far: 15845.92307
If we subtract 273 from 300, we get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

On to step 12:
If we divide 270 by 39, we get 6 and a remainder of 36.
Record the quotient 6 as the next digit in the result. 
Result so far: 15845.923076
The remainder is 36 after subtracting 234 from 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 13:
If we divide 360 by 39, we get 9 and a remainder of 9.
The next digit of our result is 9. 
Result so far: 15845.9230769
Deduct 351 from 360 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 14:
The number 39 fits into 90 2 times, leaving a remainder of 12.
Put 2 as the next digit of the answer. 
Result so far: 15845.92307692
If we take 78 away from 90, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

After the division, we end up with 15845.92307692 and a remainder of 1.2e-08.