839805 ÷ 12 
We're looking to find how many times 12 goes into 839805.

Going ahead to step 1:
8 divided by 12 is 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Fetch the next digit (3) from the dividend, attach it to 8 and continue: 83 / 12

Step 2:
83 divided by 12 is 6 with a remainder of 11.
Write down 6 as next digit of the result. 
Result so far: 6.0
The remainder is 11 after subtracting 72 from 83.
Take the next digit (9) from the dividend and append it to 11, then repeat: 119 / 12

Advancing to step 3:
119 divided by 12 is 9 with a remainder of 11.
Put 9 as the next digit of the answer. 
Result so far: 69.0
If we take 108 away from 119, we end up with 11.
Fetch the next digit (8) from the dividend, attach it to 11 and continue: 118 / 12

Step 4:
12 can be fit into 118 9 times, resulting in a remainder of 10.
Record the quotient 9 as the next digit in the result. 
Result so far: 699.0
Subtracting 108 from 118 leaves us with 10.
Include the next digit (0) from the dividend after 10, then repeat: 100 / 12

Going ahead to step 5:
The number 12 fits into 100 8 times, leaving a remainder of 4.
The next digit of our result is 8. 
Result so far: 6998.0
The remainder is 4 after subtracting 96 from 100.
Grab the next digit (5) from the dividend, add it to 4, then carry on: 45 / 12

Advancing to step 6:
When dividing 45 by 12, we get 3 with a remainder of 9.
The next digit of our result is 3. 
Result so far: 69983.0
If we take 36 away from 45, 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.

Let's proceed to step 7:
If we divide 90 by 12, we get 7 and a remainder of 6.
Record the quotient 7 as the next digit in the result. 
Result so far: 69983.7
The remainder is 6 after subtracting 84 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 8:
If we divide 60 by 12, we get 5 and a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 69983.75
Subtract 60 from 60 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 9:
0 divided by 12 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 69983.75
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 10:
12 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 69983.75
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 69983.75 with a remaining 0.0.