663388 ÷ 23 
We're looking to find how many times 23 goes into 663388.

Let's proceed to step 1:
6 divided by 23 is 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 23

Going ahead to step 2:
The number 23 fits into 66 2 times, leaving a remainder of 20.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 46 from 66 and we're left with 20.
Bring next digit (3) of the dividend behind the 20 and repeat the process: 203 / 23

On to step 3:
23 can be fit into 203 8 times, resulting in a remainder of 19.
Put 8 as the next digit of the answer. 
Result so far: 28.0
Subtracting 184 from 203 leaves us with 19.
Bring next digit (3) of the dividend behind the 19 and repeat the process: 193 / 23

Let's proceed to step 4:
23 can be fit into 193 8 times, resulting in a remainder of 9.
Record the quotient 8 as the next digit in the result. 
Result so far: 288.0
Subtracting 184 from 193 leaves us with 9.
Include the next digit (8) from the dividend after 9, then repeat: 98 / 23

Let's proceed to step 5:
When dividing 98 by 23, we get 4 with a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 2884.0
Subtracting 92 from 98 leaves us with 6.
Take the next digit (8) from the dividend and append it to 6, then repeat: 68 / 23

Let's proceed to step 6:
68 divided by 23 is 2 with a remainder of 22.
Write down 2 as next digit of the result. 
Result so far: 28842.0
Deduct 46 from 68 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 7:
If we divide 220 by 23, we get 9 and a remainder of 13.
Use 9 as the next digit of our solution. 
Result so far: 28842.9
Subtracting 207 from 220 leaves us with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 8:
23 can be fit into 130 5 times, resulting in a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 28842.95
The remainder is 15 after subtracting 115 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 9:
The number 23 fits into 150 6 times, leaving a remainder of 12.
The next digit of our result is 6. 
Result so far: 28842.956
Subtracting 138 from 150 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 10:
120 divided by 23 is 5 with a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 28842.9565
Subtracting 115 from 120 leaves us with 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 11:
The number 23 fits into 50 2 times, leaving a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 28842.95652
The remainder is 4 after subtracting 46 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 12:
40 divided by 23 is 1 with a remainder of 17.
The number 1 becomes the next digit in our result. 
Result so far: 28842.956521
If we subtract 23 from 40, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 13:
When dividing 170 by 23, we get 7 with a remainder of 9.
Put 7 as the next digit of the answer. 
Result so far: 28842.9565217
Subtracting 161 from 170 leaves us with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 14:
If we divide 90 by 23, we get 3 and a remainder of 21.
Record the quotient 3 as the next digit in the result. 
Result so far: 28842.95652173
If we subtract 69 from 90, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

The quotient of the division is 28842.95652173, and the remainder is 2.1e-08.