788121 ÷ 39 
Let's see how many times 39 fits into 788121.

Going ahead to step 1:
The number 39 fits into 7 0 times, leaving a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 39

Moving on to step 2:
When dividing 78 by 39, we get 2 with a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtract 78 from 78 to get 0.
Include the next digit (8) from the dividend after 0, then repeat: 8 / 39

Moving on to step 3:
39 can be fit into 8 0 times, resulting in a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 20.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 39

Advancing to step 4:
When dividing 81 by 39, we get 2 with a remainder of 3.
Use 2 as the next digit of our solution. 
Result so far: 202.0
Subtract 78 from 81 to get 3.
Fetch the next digit (2) from the dividend, attach it to 3 and continue: 32 / 39

On to step 5:
39 can be fit into 32 0 times, resulting in a remainder of 32.
Put 0 as the next digit of the answer. 
Result so far: 2020.0
Subtracting 0 from 32 leaves us with 32.
Append the next digit (1) from the dividend to 32 and continue with: 321 / 39

Advancing to step 6:
321 divided by 39 is 8 with a remainder of 9.
Write down 8 as next digit of the result. 
Result so far: 20208.0
If we take 312 away from 321, we end up 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.

Advancing to step 7:
39 goes into 90 2 times with a remainder of 12.
Use 2 as the next digit of our solution. 
Result so far: 20208.2
If we subtract 78 from 90, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 8:
When dividing 120 by 39, we get 3 with a remainder of 3.
Use 3 as the next digit of our solution. 
Result so far: 20208.23
Subtracting 117 from 120 leaves us 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.

Moving on to step 9:
39 goes into 30 0 times with a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 20208.23
If we take 0 away from 30, we end up with 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 10:
The number 39 fits into 300 7 times, leaving a remainder of 27.
The next digit of our result is 7. 
Result so far: 20208.2307
Subtract 273 from 300 to 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.

Moving on to step 11:
39 can be fit into 270 6 times, resulting in a remainder of 36.
Record the quotient 6 as the next digit in the result. 
Result so far: 20208.23076
If we subtract 234 from 270, 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.

Let's proceed to step 12:
39 can be fit into 360 9 times, resulting in a remainder of 9.
The next digit of our result is 9. 
Result so far: 20208.230769
Subtract 351 from 360 to 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.

On to step 13:
39 goes into 90 2 times with a remainder of 12.
Use 2 as the next digit of our solution. 
Result so far: 20208.2307692
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.

Advancing to step 14:
If we divide 120 by 39, we get 3 and a remainder of 3.
The next digit of our result is 3. 
Result so far: 20208.23076923
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.

In conclusion, the division gives 20208.23076923 with a balance of 3e-09.