389572 ÷ 12 
We want to figure out the number of times 389572 can be divided by 12.

Advancing to step 1:
3 divided by 12 is 0 with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Fetch the next digit (8) from the dividend, attach it to 3 and continue: 38 / 12

Advancing to step 2:
When dividing 38 by 12, we get 3 with a remainder of 2.
Put 3 as the next digit of the answer. 
Result so far: 3.0
The remainder is 2 after subtracting 36 from 38.
Include the next digit (9) from the dividend after 2, then repeat: 29 / 12

Let's proceed to step 3:
If we divide 29 by 12, we get 2 and a remainder of 5.
Record the quotient 2 as the next digit in the result. 
Result so far: 32.0
If we subtract 24 from 29, we get 5.
Append the next digit (5) from the dividend to 5 and continue with: 55 / 12

On to step 4:
The number 12 fits into 55 4 times, leaving a remainder of 7.
Use 4 as the next digit of our solution. 
Result so far: 324.0
If we subtract 48 from 55, we get 7.
Fetch the next digit (7) from the dividend, attach it to 7 and continue: 77 / 12

Moving on to step 5:
12 goes into 77 6 times with a remainder of 5.
Use 6 as the next digit of our solution. 
Result so far: 3246.0
If we take 72 away from 77, we end up with 5.
Bring next digit (2) of the dividend behind the 5 and repeat the process: 52 / 12

Going ahead to step 6:
If we divide 52 by 12, we get 4 and a remainder of 4.
Use 4 as the next digit of our solution. 
Result so far: 32464.0
The remainder is 4 after subtracting 48 from 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 7:
If we divide 40 by 12, we get 3 and a remainder of 4.
The next digit of our result is 3. 
Result so far: 32464.3
Deduct 36 from 40 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 8:
If we divide 40 by 12, we get 3 and a remainder of 4.
Use 3 as the next digit of our solution. 
Result so far: 32464.33
If we take 36 away from 40, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The final result is 32464.33 with a remainder of 0.004.