We look at the division of 12450 by 81 
Our goal is to divide 12450 by 81.

Going ahead to step 1:
81 can be fit into 1 0 times, resulting in a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 81

Advancing to step 2:
12 divided by 81 is 0 with a remainder of 12.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 12 to get 12.
Include the next digit (4) from the dividend after 12, then repeat: 124 / 81

Moving on to step 3:
If we divide 124 by 81, we get 1 and a remainder of 43.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 81 from 124 to get 43.
Bring next digit (5) of the dividend behind the 43 and repeat the process: 435 / 81

Going ahead to step 4:
The number 81 fits into 435 5 times, leaving a remainder of 30.
The next digit of our result is 5. 
Result so far: 15.0
Deduct 405 from 435 and we're left with 30.
Fetch the next digit (0) from the dividend, attach it to 30 and continue: 300 / 81

On to step 5:
The number 81 fits into 300 3 times, leaving a remainder of 57.
Write down 3 as next digit of the result. 
Result so far: 153.0
Deduct 243 from 300 and we're left with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Advancing to step 6:
If we divide 570 by 81, we get 7 and a remainder of 3.
Write down 7 as next digit of the result. 
Result so far: 153.7
If we subtract 567 from 570, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 7:
81 goes into 30 0 times with a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 153.7
Subtract 0 from 30 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 8:
81 can be fit into 300 3 times, resulting in a remainder of 57.
The number 3 becomes the next digit in our result. 
Result so far: 153.703
If we subtract 243 from 300, we get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Let's proceed to step 9:
81 can be fit into 570 7 times, resulting in a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 153.7037
Subtract 567 from 570 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 10:
When dividing 30 by 81, we get 0 with a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 153.7037
If we subtract 0 from 30, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 11:
The number 81 fits into 300 3 times, leaving a remainder of 57.
Record the quotient 3 as the next digit in the result. 
Result so far: 153.703703
Subtract 243 from 300 to get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Going ahead to step 12:
570 divided by 81 is 7 with a remainder of 3.
The next digit of our result is 7. 
Result so far: 153.7037037
The remainder is 3 after subtracting 567 from 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Going ahead to step 13:
81 can be fit into 30 0 times, resulting in a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 153.7037037
The remainder is 30 after subtracting 0 from 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

In conclusion, the division gives 153.7037037 with a balance of 3e-08.