We look at the division of 88563511 by 399 
Let's see how many times 399 fits into 88563511.

On to step 1:
8 divided by 399 is 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Bring next digit (8) of the dividend behind the 8 and repeat the process: 88 / 399

Advancing to step 2:
88 divided by 399 is 0 with a remainder of 88.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 88, we get 88.
Append the next digit (5) from the dividend to 88 and continue with: 885 / 399

Step 3:
The number 399 fits into 885 2 times, leaving a remainder of 87.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we take 798 away from 885, we end up with 87.
Fetch the next digit (6) from the dividend, attach it to 87 and continue: 876 / 399

Going ahead to step 4:
When dividing 876 by 399, we get 2 with a remainder of 78.
Write down 2 as next digit of the result. 
Result so far: 22.0
Subtracting 798 from 876 leaves us with 78.
Take the next digit (3) from the dividend and append it to 78, then repeat: 783 / 399

Moving on to step 5:
When dividing 783 by 399, we get 1 with a remainder of 384.
Use 1 as the next digit of our solution. 
Result so far: 221.0
If we subtract 399 from 783, we get 384.
Bring next digit (5) of the dividend behind the 384 and repeat the process: 3845 / 399

Moving on to step 6:
When dividing 3845 by 399, we get 9 with a remainder of 254.
Record the quotient 9 as the next digit in the result. 
Result so far: 2219.0
The remainder is 254 after subtracting 3591 from 3845.
Fetch the next digit (1) from the dividend, attach it to 254 and continue: 2541 / 399

Going ahead to step 7:
The number 399 fits into 2541 6 times, leaving a remainder of 147.
The next digit of our result is 6. 
Result so far: 22196.0
Subtract 2394 from 2541 to get 147.
Fetch the next digit (1) from the dividend, attach it to 147 and continue: 1471 / 399

On to step 8:
When dividing 1471 by 399, we get 3 with a remainder of 274.
The next digit of our result is 3. 
Result so far: 221963.0
Deduct 1197 from 1471 and we're left with 274.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2740, and continue the process.

Let's proceed to step 9:
If we divide 2740 by 399, we get 6 and a remainder of 346.
Write down 6 as next digit of the result. 
Result so far: 221963.6
Subtract 2394 from 2740 to get 346.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3460, and continue the process.

On to step 10:
399 can be fit into 3460 8 times, resulting in a remainder of 268.
Use 8 as the next digit of our solution. 
Result so far: 221963.68
Deduct 3192 from 3460 and we're left with 268.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2680, and continue the process.

Let's proceed to step 11:
399 can be fit into 2680 6 times, resulting in a remainder of 286.
Use 6 as the next digit of our solution. 
Result so far: 221963.686
Subtracting 2394 from 2680 leaves us with 286.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2860, and continue the process.

Going ahead to step 12:
399 goes into 2860 7 times with a remainder of 67.
Write down 7 as next digit of the result. 
Result so far: 221963.6867
Subtract 2793 from 2860 to get 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Moving on to step 13:
If we divide 670 by 399, we get 1 and a remainder of 271.
The number 1 becomes the next digit in our result. 
Result so far: 221963.68671
Deduct 399 from 670 and we're left with 271.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2710, and continue the process.

On to step 14:
If we divide 2710 by 399, we get 6 and a remainder of 316.
The number 6 becomes the next digit in our result. 
Result so far: 221963.686716
Subtracting 2394 from 2710 leaves us with 316.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

Let's proceed to step 15:
When dividing 3160 by 399, we get 7 with a remainder of 367.
The next digit of our result is 7. 
Result so far: 221963.6867167
If we subtract 2793 from 3160, we get 367.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3670, and continue the process.

Step 16:
If we divide 3670 by 399, we get 9 and a remainder of 79.
Write down 9 as next digit of the result. 
Result so far: 221963.68671679
If we subtract 3591 from 3670, we get 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

In conclusion, the division gives 221963.68671679 with a balance of 7.9e-08.