Let's divide 81261543 by 123
Our goal is to divide 81261543 by 123.

Advancing to step 1:
123 goes into 8 0 times with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 123

Moving on to step 2:
123 goes into 81 0 times with a remainder of 81.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 81 and we're left with 81.
Take the next digit (2) from the dividend and append it to 81, then repeat: 812 / 123

Advancing to step 3:
The number 123 fits into 812 6 times, leaving a remainder of 74.
Write down 6 as next digit of the result. 
Result so far: 6.0
Deduct 738 from 812 and we're left with 74.
Take the next digit (6) from the dividend and append it to 74, then repeat: 746 / 123

On to step 4:
When dividing 746 by 123, we get 6 with a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 66.0
Subtract 738 from 746 to get 8.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 123

On to step 5:
123 goes into 81 0 times with a remainder of 81.
Put 0 as the next digit of the answer. 
Result so far: 660.0
The remainder is 81 after subtracting 0 from 81.
Include the next digit (5) from the dividend after 81, then repeat: 815 / 123

Moving on to step 6:
If we divide 815 by 123, we get 6 and a remainder of 77.
Use 6 as the next digit of our solution. 
Result so far: 6606.0
Subtract 738 from 815 to get 77.
Include the next digit (4) from the dividend after 77, then repeat: 774 / 123

Moving on to step 7:
The number 123 fits into 774 6 times, leaving a remainder of 36.
The next digit of our result is 6. 
Result so far: 66066.0
If we subtract 738 from 774, we get 36.
Fetch the next digit (3) from the dividend, attach it to 36 and continue: 363 / 123

Let's proceed to step 8:
363 divided by 123 is 2 with a remainder of 117.
The number 2 becomes the next digit in our result. 
Result so far: 660662.0
If we subtract 246 from 363, we get 117.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1170, and continue the process.

Advancing to step 9:
123 goes into 1170 9 times with a remainder of 63.
Write down 9 as next digit of the result. 
Result so far: 660662.9
Subtract 1107 from 1170 to get 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Step 10:
630 divided by 123 is 5 with a remainder of 15.
Put 5 as the next digit of the answer. 
Result so far: 660662.95
Deduct 615 from 630 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 11:
When dividing 150 by 123, we get 1 with a remainder of 27.
The number 1 becomes the next digit in our result. 
Result so far: 660662.951
Subtracting 123 from 150 leaves us with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Advancing to step 12:
The number 123 fits into 270 2 times, leaving a remainder of 24.
Use 2 as the next digit of our solution. 
Result so far: 660662.9512
If we subtract 246 from 270, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 13:
123 goes into 240 1 times with a remainder of 117.
Record the quotient 1 as the next digit in the result. 
Result so far: 660662.95121
If we subtract 123 from 240, we get 117.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1170, and continue the process.

Advancing to step 14:
If we divide 1170 by 123, we get 9 and a remainder of 63.
Write down 9 as next digit of the result. 
Result so far: 660662.951219
Subtract 1107 from 1170 to get 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

On to step 15:
If we divide 630 by 123, we get 5 and a remainder of 15.
The next digit of our result is 5. 
Result so far: 660662.9512195
If we take 615 away from 630, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 16:
When dividing 150 by 123, we get 1 with a remainder of 27.
Record the quotient 1 as the next digit in the result. 
Result so far: 660662.95121951
Subtract 123 from 150 to get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

In conclusion, the division gives 660662.95121951 with a balance of 2.7e-08.