852120 ÷ 39 
Our goal is to divide 852120 by 39.

Step 1:
If we divide 8 by 39, we get 0 and a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Fetch the next digit (5) from the dividend, attach it to 8 and continue: 85 / 39

Moving on to step 2:
39 goes into 85 2 times with a remainder of 7.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtracting 78 from 85 leaves us with 7.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 39

On to step 3:
If we divide 72 by 39, we get 1 and a remainder of 33.
The number 1 becomes the next digit in our result. 
Result so far: 21.0
If we take 39 away from 72, we end up with 33.
Bring next digit (1) of the dividend behind the 33 and repeat the process: 331 / 39

Moving on to step 4:
331 divided by 39 is 8 with a remainder of 19.
Record the quotient 8 as the next digit in the result. 
Result so far: 218.0
Deduct 312 from 331 and we're left with 19.
Take the next digit (2) from the dividend and append it to 19, then repeat: 192 / 39

Going ahead to step 5:
When dividing 192 by 39, we get 4 with a remainder of 36.
Write down 4 as next digit of the result. 
Result so far: 2184.0
Subtract 156 from 192 to get 36.
Grab the next digit (0) from the dividend, add it to 36, then carry on: 360 / 39

Moving on to step 6:
360 divided by 39 is 9 with a remainder of 9.
Record the quotient 9 as the next digit in the result. 
Result so far: 21849.0
The remainder is 9 after subtracting 351 from 360.
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:
When dividing 90 by 39, we get 2 with a remainder of 12.
The next digit of our result is 2. 
Result so far: 21849.2
Subtract 78 from 90 to 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.

Step 8:
If we divide 120 by 39, we get 3 and a remainder of 3.
Put 3 as the next digit of the answer. 
Result so far: 21849.23
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.

On to step 9:
30 divided by 39 is 0 with a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 21849.23
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.

Step 10:
When dividing 300 by 39, we get 7 with a remainder of 27.
Write down 7 as next digit of the result. 
Result so far: 21849.2307
Subtracting 273 from 300 leaves us with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Going ahead to step 11:
39 goes into 270 6 times with a remainder of 36.
Use 6 as the next digit of our solution. 
Result so far: 21849.23076
Subtract 234 from 270 to 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.

Moving on to step 12:
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: 21849.230769
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.

Going ahead to step 13:
39 can be fit into 90 2 times, resulting in a remainder of 12.
Use 2 as the next digit of our solution. 
Result so far: 21849.2307692
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.

Going ahead to step 14:
120 divided by 39 is 3 with a remainder of 3.
Put 3 as the next digit of the answer. 
Result so far: 21849.23076923
The remainder is 3 after subtracting 117 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

The final outcome is 21849.23076923, with a leftover of 3e-09.