12123886 divided by 720 
Our goal is to divide 12123886 by 720.

Going ahead to step 1:
If we divide 1 by 720, we get 0 and a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 720

Advancing to step 2:
720 goes into 12 0 times with a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Fetch the next digit (1) from the dividend, attach it to 12 and continue: 121 / 720

On to step 3:
720 can be fit into 121 0 times, resulting in a remainder of 121.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 121 and we're left with 121.
Take the next digit (2) from the dividend and append it to 121, then repeat: 1212 / 720

Let's proceed to step 4:
720 goes into 1212 1 times with a remainder of 492.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we subtract 720 from 1212, we get 492.
Take the next digit (3) from the dividend and append it to 492, then repeat: 4923 / 720

Let's proceed to step 5:
720 goes into 4923 6 times with a remainder of 603.
Record the quotient 6 as the next digit in the result. 
Result so far: 16.0
Deduct 4320 from 4923 and we're left with 603.
Append the next digit (8) from the dividend to 603 and continue with: 6038 / 720

Moving on to step 6:
When dividing 6038 by 720, we get 8 with a remainder of 278.
Record the quotient 8 as the next digit in the result. 
Result so far: 168.0
Subtract 5760 from 6038 to get 278.
Bring next digit (8) of the dividend behind the 278 and repeat the process: 2788 / 720

Advancing to step 7:
720 goes into 2788 3 times with a remainder of 628.
The number 3 becomes the next digit in our result. 
Result so far: 1683.0
Deduct 2160 from 2788 and we're left with 628.
Include the next digit (6) from the dividend after 628, then repeat: 6286 / 720

Let's proceed to step 8:
When dividing 6286 by 720, we get 8 with a remainder of 526.
Put 8 as the next digit of the answer. 
Result so far: 16838.0
Subtract 5760 from 6286 to get 526.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5260, and continue the process.

Advancing to step 9:
720 can be fit into 5260 7 times, resulting in a remainder of 220.
Write down 7 as next digit of the result. 
Result so far: 16838.7
If we take 5040 away from 5260, we end up with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Let's proceed to step 10:
The number 720 fits into 2200 3 times, leaving a remainder of 40.
The next digit of our result is 3. 
Result so far: 16838.73
The remainder is 40 after subtracting 2160 from 2200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 11:
The number 720 fits into 400 0 times, leaving a remainder of 400.
Write down 0 as next digit of the result. 
Result so far: 16838.73
Subtract 0 from 400 to get 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Advancing to step 12:
720 can be fit into 4000 5 times, resulting in a remainder of 400.
The number 5 becomes the next digit in our result. 
Result so far: 16838.7305
The remainder is 400 after subtracting 3600 from 4000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

On to step 13:
When dividing 4000 by 720, we get 5 with a remainder of 400.
The number 5 becomes the next digit in our result. 
Result so far: 16838.73055
If we subtract 3600 from 4000, we get 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

In conclusion, the division gives 16838.73055 with a balance of 0.0004.