99223520 ÷ 399 
We're looking to find how many times 399 goes into 99223520.

Let's proceed to step 1:
If we divide 9 by 399, we get 0 and a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 399

Advancing to step 2:
If we divide 99 by 399, we get 0 and a remainder of 99.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 99 to get 99.
Take the next digit (2) from the dividend and append it to 99, then repeat: 992 / 399

Advancing to step 3:
The number 399 fits into 992 2 times, leaving a remainder of 194.
The next digit of our result is 2. 
Result so far: 2.0
If we subtract 798 from 992, we get 194.
Append the next digit (2) from the dividend to 194 and continue with: 1942 / 399

On to step 4:
399 goes into 1942 4 times with a remainder of 346.
Write down 4 as next digit of the result. 
Result so far: 24.0
Subtracting 1596 from 1942 leaves us with 346.
Take the next digit (3) from the dividend and append it to 346, then repeat: 3463 / 399

Moving on to step 5:
When dividing 3463 by 399, we get 8 with a remainder of 271.
Write down 8 as next digit of the result. 
Result so far: 248.0
Subtracting 3192 from 3463 leaves us with 271.
Fetch the next digit (5) from the dividend, attach it to 271 and continue: 2715 / 399

Let's proceed to step 6:
If we divide 2715 by 399, we get 6 and a remainder of 321.
Put 6 as the next digit of the answer. 
Result so far: 2486.0
The remainder is 321 after subtracting 2394 from 2715.
Take the next digit (2) from the dividend and append it to 321, then repeat: 3212 / 399

Moving on to step 7:
If we divide 3212 by 399, we get 8 and a remainder of 20.
The number 8 becomes the next digit in our result. 
Result so far: 24868.0
If we subtract 3192 from 3212, we get 20.
Grab the next digit (0) from the dividend, add it to 20, then carry on: 200 / 399

Going ahead to step 8:
When dividing 200 by 399, we get 0 with a remainder of 200.
The number 0 becomes the next digit in our result. 
Result so far: 248680.0
If we subtract 0 from 200, we get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Moving on to step 9:
2000 divided by 399 is 5 with a remainder of 5.
The next digit of our result is 5. 
Result so far: 248680.5
Subtract 1995 from 2000 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 10:
When dividing 50 by 399, we get 0 with a remainder of 50.
Write down 0 as next digit of the result. 
Result so far: 248680.5
The remainder is 50 after subtracting 0 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 11:
399 can be fit into 500 1 times, resulting in a remainder of 101.
The next digit of our result is 1. 
Result so far: 248680.501
If we take 399 away from 500, we end up with 101.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1010, and continue the process.

Moving on to step 12:
399 goes into 1010 2 times with a remainder of 212.
The number 2 becomes the next digit in our result. 
Result so far: 248680.5012
Subtracting 798 from 1010 leaves us with 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

Let's proceed to step 13:
2120 divided by 399 is 5 with a remainder of 125.
The next digit of our result is 5. 
Result so far: 248680.50125
If we take 1995 away from 2120, we end up with 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Going ahead to step 14:
399 goes into 1250 3 times with a remainder of 53.
Write down 3 as next digit of the result. 
Result so far: 248680.501253
Deduct 1197 from 1250 and we're left with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Moving on to step 15:
530 divided by 399 is 1 with a remainder of 131.
Put 1 as the next digit of the answer. 
Result so far: 248680.5012531
Deduct 399 from 530 and we're left with 131.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1310, and continue the process.

On to step 16:
If we divide 1310 by 399, we get 3 and a remainder of 113.
Record the quotient 3 as the next digit in the result. 
Result so far: 248680.50125313
The remainder is 113 after subtracting 1197 from 1310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1130, and continue the process.

The final outcome is 248680.50125313, with a leftover of 1.13e-07.