We look at the division of 612090 by 12 
We're looking to find how many times 12 goes into 612090.

Let's proceed to step 1:
6 divided by 12 is 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Fetch the next digit (1) from the dividend, attach it to 6 and continue: 61 / 12

Going ahead to step 2:
If we divide 61 by 12, we get 5 and a remainder of 1.
The next digit of our result is 5. 
Result so far: 5.0
If we subtract 60 from 61, we get 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 12

On to step 3:
12 divided by 12 is 1 with a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 51.0
The remainder is 0 after subtracting 12 from 12.
Include the next digit (0) from the dividend after 0, then repeat: 0 / 12

Moving on to step 4:
0 divided by 12 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 510.0
Deduct 0 from 0 and we're left with 0.
Take the next digit (9) from the dividend and append it to 0, then repeat: 9 / 12

Advancing to step 5:
When dividing 9 by 12, we get 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 5100.0
The remainder is 9 after subtracting 0 from 9.
Bring next digit (0) of the dividend behind the 9 and repeat the process: 90 / 12

Moving on to step 6:
If we divide 90 by 12, we get 7 and a remainder of 6.
The next digit of our result is 7. 
Result so far: 51007.0
Subtract 84 from 90 to get 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 7:
When dividing 60 by 12, we get 5 with a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 51007.5
The remainder is 0 after subtracting 60 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 8:
When dividing 0 by 12, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 51007.5
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.

Advancing to step 9:
If we divide 0 by 12, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 51007.5
The remainder is 0 after subtracting 0 from 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 51007.5 with a balance of 0.0.