63126771 ÷ 123 
Our goal is to divide 63126771 by 123.

On to step 1:
6 divided by 123 is 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 123

On to step 2:
123 can be fit into 63 0 times, resulting in a remainder of 63.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 63 to get 63.
Include the next digit (1) from the dividend after 63, then repeat: 631 / 123

Step 3:
The number 123 fits into 631 5 times, leaving a remainder of 16.
Write down 5 as next digit of the result. 
Result so far: 5.0
If we subtract 615 from 631, we get 16.
Include the next digit (2) from the dividend after 16, then repeat: 162 / 123

Step 4:
If we divide 162 by 123, we get 1 and a remainder of 39.
The next digit of our result is 1. 
Result so far: 51.0
Subtract 123 from 162 to get 39.
Bring next digit (6) of the dividend behind the 39 and repeat the process: 396 / 123

Advancing to step 5:
When dividing 396 by 123, we get 3 with a remainder of 27.
Put 3 as the next digit of the answer. 
Result so far: 513.0
The remainder is 27 after subtracting 369 from 396.
Grab the next digit (7) from the dividend, add it to 27, then carry on: 277 / 123

Advancing to step 6:
The number 123 fits into 277 2 times, leaving a remainder of 31.
The number 2 becomes the next digit in our result. 
Result so far: 5132.0
Subtract 246 from 277 to get 31.
Fetch the next digit (7) from the dividend, attach it to 31 and continue: 317 / 123

Step 7:
The number 123 fits into 317 2 times, leaving a remainder of 71.
The next digit of our result is 2. 
Result so far: 51322.0
If we take 246 away from 317, we end up with 71.
Bring next digit (1) of the dividend behind the 71 and repeat the process: 711 / 123

Advancing to step 8:
When dividing 711 by 123, we get 5 with a remainder of 96.
The number 5 becomes the next digit in our result. 
Result so far: 513225.0
Subtract 615 from 711 to get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Advancing to step 9:
If we divide 960 by 123, we get 7 and a remainder of 99.
Put 7 as the next digit of the answer. 
Result so far: 513225.7
Subtract 861 from 960 to get 99.
Since there are no more digits in the dividend, we add a zero to the remainder making it 990, and continue the process.

Let's proceed to step 10:
The number 123 fits into 990 8 times, leaving a remainder of 6.
The next digit of our result is 8. 
Result so far: 513225.78
Deduct 984 from 990 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 11:
If we divide 60 by 123, we get 0 and a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 513225.78
Subtracting 0 from 60 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 12:
When dividing 600 by 123, we get 4 with a remainder of 108.
Write down 4 as next digit of the result. 
Result so far: 513225.7804
Deduct 492 from 600 and we're left with 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

Advancing to step 13:
1080 divided by 123 is 8 with a remainder of 96.
The next digit of our result is 8. 
Result so far: 513225.78048
If we subtract 984 from 1080, we get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

On to step 14:
123 goes into 960 7 times with a remainder of 99.
Write down 7 as next digit of the result. 
Result so far: 513225.780487
Subtract 861 from 960 to get 99.
Since there are no more digits in the dividend, we add a zero to the remainder making it 990, and continue the process.

Going ahead to step 15:
123 can be fit into 990 8 times, resulting in a remainder of 6.
Write down 8 as next digit of the result. 
Result so far: 513225.7804878
Deduct 984 from 990 and we're left with 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 16:
60 divided by 123 is 0 with a remainder of 60.
Write down 0 as next digit of the result. 
Result so far: 513225.7804878
Subtract 0 from 60 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

After the division, we end up with 513225.7804878 and a remainder of 6e-08.