We look at the division of 18459838 by 12 
We're looking to find how many times 12 goes into 18459838.

Advancing to step 1:
When dividing 1 by 12, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Take the next digit (8) from the dividend and append it to 1, then repeat: 18 / 12

Moving on to step 2:
18 divided by 12 is 1 with a remainder of 6.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 12 away from 18, we end up with 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 12

On to step 3:
12 goes into 64 5 times with a remainder of 4.
Put 5 as the next digit of the answer. 
Result so far: 15.0
If we take 60 away from 64, we end up with 4.
Append the next digit (5) from the dividend to 4 and continue with: 45 / 12

Advancing to step 4:
45 divided by 12 is 3 with a remainder of 9.
Write down 3 as next digit of the result. 
Result so far: 153.0
Subtracting 36 from 45 leaves us with 9.
Bring next digit (9) of the dividend behind the 9 and repeat the process: 99 / 12

Step 5:
The number 12 fits into 99 8 times, leaving a remainder of 3.
The number 8 becomes the next digit in our result. 
Result so far: 1538.0
The remainder is 3 after subtracting 96 from 99.
Append the next digit (8) from the dividend to 3 and continue with: 38 / 12

Advancing to step 6:
When dividing 38 by 12, we get 3 with a remainder of 2.
Use 3 as the next digit of our solution. 
Result so far: 15383.0
Subtract 36 from 38 to get 2.
Fetch the next digit (3) from the dividend, attach it to 2 and continue: 23 / 12

Going ahead to step 7:
When dividing 23 by 12, we get 1 with a remainder of 11.
Record the quotient 1 as the next digit in the result. 
Result so far: 153831.0
If we subtract 12 from 23, we get 11.
Include the next digit (8) from the dividend after 11, then repeat: 118 / 12

Moving on to step 8:
12 can be fit into 118 9 times, resulting in a remainder of 10.
The number 9 becomes the next digit in our result. 
Result so far: 1538319.0
If we subtract 108 from 118, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 9:
12 goes into 100 8 times with a remainder of 4.
Write down 8 as next digit of the result. 
Result so far: 1538319.8
Deduct 96 from 100 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.

On to step 10:
If we divide 40 by 12, we get 3 and a remainder of 4.
Put 3 as the next digit of the answer. 
Result so far: 1538319.83
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.

Step 11:
The number 12 fits into 40 3 times, leaving a remainder of 4.
The number 3 becomes the next digit in our result. 
Result so far: 1538319.833
Subtract 36 from 40 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

In conclusion, the division gives 1538319.833 with a balance of 0.0004.