648638 ÷ 23 
Let's see how many times 23 fits into 648638.

Let's proceed to step 1:
23 goes into 6 0 times with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 23

Step 2:
23 can be fit into 64 2 times, resulting in a remainder of 18.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Deduct 46 from 64 and we're left with 18.
Take the next digit (8) from the dividend and append it to 18, then repeat: 188 / 23

Step 3:
If we divide 188 by 23, we get 8 and a remainder of 4.
Write down 8 as next digit of the result. 
Result so far: 28.0
Deduct 184 from 188 and we're left with 4.
Append the next digit (6) from the dividend to 4 and continue with: 46 / 23

Going ahead to step 4:
23 goes into 46 2 times with a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 282.0
Deduct 46 from 46 and we're left with 0.
Take the next digit (3) from the dividend and append it to 0, then repeat: 3 / 23

Let's proceed to step 5:
23 goes into 3 0 times with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 2820.0
If we take 0 away from 3, we end up with 3.
Append the next digit (8) from the dividend to 3 and continue with: 38 / 23

Advancing to step 6:
23 can be fit into 38 1 times, resulting in a remainder of 15.
Use 1 as the next digit of our solution. 
Result so far: 28201.0
Subtracting 23 from 38 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 7:
The number 23 fits into 150 6 times, leaving a remainder of 12.
Put 6 as the next digit of the answer. 
Result so far: 28201.6
If we subtract 138 from 150, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 8:
23 can be fit into 120 5 times, resulting in a remainder of 5.
The next digit of our result is 5. 
Result so far: 28201.65
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.

Let's proceed to step 9:
When dividing 50 by 23, we get 2 with a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 28201.652
Subtracting 46 from 50 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 10:
23 can be fit into 40 1 times, resulting in a remainder of 17.
Put 1 as the next digit of the answer. 
Result so far: 28201.6521
Subtracting 23 from 40 leaves us with 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 11:
23 can be fit into 170 7 times, resulting in a remainder of 9.
Record the quotient 7 as the next digit in the result. 
Result so far: 28201.65217
Deduct 161 from 170 and we're left 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 12:
90 divided by 23 is 3 with a remainder of 21.
The number 3 becomes the next digit in our result. 
Result so far: 28201.652173
If we take 69 away from 90, we end up with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Advancing to step 13:
If we divide 210 by 23, we get 9 and a remainder of 3.
The number 9 becomes the next digit in our result. 
Result so far: 28201.6521739
Subtract 207 from 210 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 14:
23 can be fit into 30 1 times, resulting in a remainder of 7.
Write down 1 as next digit of the result. 
Result so far: 28201.65217391
Deduct 23 from 30 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Our division results in 28201.65217391 with a remaining 7e-09.