We're dividing 1212871 by 999 
We want to figure out the number of times 1212871 can be divided by 999.

Going ahead to step 1:
If we divide 1 by 999, we get 0 and a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 999

Advancing to step 2:
999 can be fit into 12 0 times, resulting in a remainder of 12.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 12 to get 12.
Take the next digit (1) from the dividend and append it to 12, then repeat: 121 / 999

Step 3:
999 goes into 121 0 times with a remainder of 121.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 121 leaves us with 121.
Include the next digit (2) from the dividend after 121, then repeat: 1212 / 999

Let's proceed to step 4:
When dividing 1212 by 999, we get 1 with a remainder of 213.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 999 from 1212 leaves us with 213.
Append the next digit (8) from the dividend to 213 and continue with: 2138 / 999

On to step 5:
999 goes into 2138 2 times with a remainder of 140.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
The remainder is 140 after subtracting 1998 from 2138.
Bring next digit (7) of the dividend behind the 140 and repeat the process: 1407 / 999

Let's proceed to step 6:
When dividing 1407 by 999, we get 1 with a remainder of 408.
The number 1 becomes the next digit in our result. 
Result so far: 121.0
If we take 999 away from 1407, we end up with 408.
Take the next digit (1) from the dividend and append it to 408, then repeat: 4081 / 999

Step 7:
The number 999 fits into 4081 4 times, leaving a remainder of 85.
The number 4 becomes the next digit in our result. 
Result so far: 1214.0
Subtracting 3996 from 4081 leaves us with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

On to step 8:
If we divide 850 by 999, we get 0 and a remainder of 850.
The next digit of our result is 0. 
Result so far: 1214.0
Subtract 0 from 850 to get 850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8500, and continue the process.

On to step 9:
8500 divided by 999 is 8 with a remainder of 508.
Record the quotient 8 as the next digit in the result. 
Result so far: 1214.08
If we take 7992 away from 8500, we end up with 508.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5080, and continue the process.

On to step 10:
If we divide 5080 by 999, we get 5 and a remainder of 85.
Record the quotient 5 as the next digit in the result. 
Result so far: 1214.085
Subtracting 4995 from 5080 leaves us with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Advancing to step 11:
999 can be fit into 850 0 times, resulting in a remainder of 850.
Use 0 as the next digit of our solution. 
Result so far: 1214.085
Subtracting 0 from 850 leaves us with 850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8500, and continue the process.

Step 12:
8500 divided by 999 is 8 with a remainder of 508.
The next digit of our result is 8. 
Result so far: 1214.08508
If we take 7992 away from 8500, we end up with 508.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5080, and continue the process.

Moving on to step 13:
The number 999 fits into 5080 5 times, leaving a remainder of 85.
Put 5 as the next digit of the answer. 
Result so far: 1214.085085
The remainder is 85 after subtracting 4995 from 5080.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

On to step 14:
The number 999 fits into 850 0 times, leaving a remainder of 850.
The number 0 becomes the next digit in our result. 
Result so far: 1214.085085
The remainder is 850 after subtracting 0 from 850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8500, and continue the process.

Let's proceed to step 15:
999 goes into 8500 8 times with a remainder of 508.
Write down 8 as next digit of the result. 
Result so far: 1214.08508508
If we take 7992 away from 8500, we end up with 508.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5080, and continue the process.

In conclusion, the division gives 1214.08508508 with a balance of 5.08e-07.