648428 ÷ 23 
We want to figure out the number of times 648428 can be divided by 23.

Let's proceed to step 1:
23 goes into 6 0 times with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 23

Step 2:
If we divide 64 by 23, we get 2 and a remainder of 18.
The next digit of our result is 2. 
Result so far: 2.0
Subtract 46 from 64 to get 18.
Bring next digit (8) of the dividend behind the 18 and repeat the process: 188 / 23

On to step 3:
23 can be fit into 188 8 times, resulting in a remainder of 4.
The number 8 becomes the next digit in our result. 
Result so far: 28.0
If we take 184 away from 188, we end up with 4.
Bring next digit (4) of the dividend behind the 4 and repeat the process: 44 / 23

Advancing to step 4:
23 can be fit into 44 1 times, resulting in a remainder of 21.
Use 1 as the next digit of our solution. 
Result so far: 281.0
If we take 23 away from 44, we end up with 21.
Append the next digit (2) from the dividend to 21 and continue with: 212 / 23

Moving on to step 5:
212 divided by 23 is 9 with a remainder of 5.
Use 9 as the next digit of our solution. 
Result so far: 2819.0
Subtract 207 from 212 to get 5.
Bring next digit (8) of the dividend behind the 5 and repeat the process: 58 / 23

Going ahead to step 6:
23 goes into 58 2 times with a remainder of 12.
The next digit of our result is 2. 
Result so far: 28192.0
Subtract 46 from 58 to 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.

Moving on to step 7:
If we divide 120 by 23, we get 5 and a remainder of 5.
Write down 5 as next digit of the result. 
Result so far: 28192.5
If we take 115 away from 120, we end up 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.

On to step 8:
23 can be fit into 50 2 times, resulting in a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 28192.52
Subtract 46 from 50 to get 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 9:
23 goes into 40 1 times with a remainder of 17.
Write down 1 as next digit of the result. 
Result so far: 28192.521
Subtract 23 from 40 to 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.

On to step 10:
If we divide 170 by 23, we get 7 and a remainder of 9.
Record the quotient 7 as the next digit in the result. 
Result so far: 28192.5217
The remainder is 9 after subtracting 161 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 11:
If we divide 90 by 23, we get 3 and a remainder of 21.
Use 3 as the next digit of our solution. 
Result so far: 28192.52173
Subtract 69 from 90 to 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.

Going ahead to step 12:
210 divided by 23 is 9 with a remainder of 3.
Use 9 as the next digit of our solution. 
Result so far: 28192.521739
If we subtract 207 from 210, we 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.

Let's proceed to step 13:
If we divide 30 by 23, we get 1 and a remainder of 7.
Put 1 as the next digit of the answer. 
Result so far: 28192.5217391
If we take 23 away from 30, we end up 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.

Going ahead to step 14:
70 divided by 23 is 3 with a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 28192.52173913
If we subtract 69 from 70, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The final result is 28192.52173913 with a remainder of 1e-09.