We're dividing 805431 by 12 
We want to divide 805431 by 12.

Moving on to step 1:
The number 12 fits into 8 0 times, leaving a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Take the next digit (0) from the dividend and append it to 8, then repeat: 80 / 12

Advancing to step 2:
The number 12 fits into 80 6 times, leaving a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 6.0
If we take 72 away from 80, we end up with 8.
Include the next digit (5) from the dividend after 8, then repeat: 85 / 12

Let's proceed to step 3:
The number 12 fits into 85 7 times, leaving a remainder of 1.
Record the quotient 7 as the next digit in the result. 
Result so far: 67.0
Deduct 84 from 85 and we're left with 1.
Grab the next digit (4) from the dividend, add it to 1, then carry on: 14 / 12

Let's proceed to step 4:
12 goes into 14 1 times with a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 671.0
If we subtract 12 from 14, we get 2.
Append the next digit (3) from the dividend to 2 and continue with: 23 / 12

Going ahead to step 5:
If we divide 23 by 12, we get 1 and a remainder of 11.
Record the quotient 1 as the next digit in the result. 
Result so far: 6711.0
If we take 12 away from 23, we end up with 11.
Bring next digit (1) of the dividend behind the 11 and repeat the process: 111 / 12

On to step 6:
When dividing 111 by 12, we get 9 with a remainder of 3.
Write down 9 as next digit of the result. 
Result so far: 67119.0
The remainder is 3 after subtracting 108 from 111.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Let's proceed to step 7:
If we divide 30 by 12, we get 2 and a remainder of 6.
Put 2 as the next digit of the answer. 
Result so far: 67119.2
Deduct 24 from 30 and we're left 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.

Step 8:
When dividing 60 by 12, we get 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 67119.25
If we take 60 away from 60, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 9:
When dividing 0 by 12, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 67119.25
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 10:
0 divided by 12 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 67119.25
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

In conclusion, the division gives 67119.25 with a balance of 0.0.