We look at the division of 644959 by 23 
Our goal is to divide 644959 by 23.

On 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
Subtracting 0 from 6 leaves us with 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 23

Advancing to step 2:
When dividing 64 by 23, we get 2 with a remainder of 18.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Deduct 46 from 64 and we're left with 18.
Fetch the next digit (4) from the dividend, attach it to 18 and continue: 184 / 23

Advancing to step 3:
23 goes into 184 8 times with a remainder of 0.
Record the quotient 8 as the next digit in the result. 
Result so far: 28.0
Subtracting 184 from 184 leaves us with 0.
Include the next digit (9) from the dividend after 0, then repeat: 9 / 23

Let's proceed to step 4:
The number 23 fits into 9 0 times, leaving a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 280.0
Deduct 0 from 9 and we're left with 9.
Grab the next digit (5) from the dividend, add it to 9, then carry on: 95 / 23

Step 5:
The number 23 fits into 95 4 times, leaving a remainder of 3.
Put 4 as the next digit of the answer. 
Result so far: 2804.0
If we take 92 away from 95, we end up with 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 23

Let's proceed to step 6:
If we divide 39 by 23, we get 1 and a remainder of 16.
Write down 1 as next digit of the result. 
Result so far: 28041.0
If we take 23 away from 39, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 7:
23 can be fit into 160 6 times, resulting in a remainder of 22.
The number 6 becomes the next digit in our result. 
Result so far: 28041.6
Subtracting 138 from 160 leaves us 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.

Going ahead to step 8:
220 divided by 23 is 9 with a remainder of 13.
Put 9 as the next digit of the answer. 
Result so far: 28041.69
Subtract 207 from 220 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 9:
If we divide 130 by 23, we get 5 and a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 28041.695
Subtracting 115 from 130 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 10:
When dividing 150 by 23, we get 6 with a remainder of 12.
Record the quotient 6 as the next digit in the result. 
Result so far: 28041.6956
The remainder is 12 after subtracting 138 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 11:
23 can be fit into 120 5 times, resulting in a remainder of 5.
Put 5 as the next digit of the answer. 
Result so far: 28041.69565
Deduct 115 from 120 and we're left 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 12:
When dividing 50 by 23, we get 2 with a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 28041.695652
If we take 46 away from 50, we end up 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 13:
When dividing 40 by 23, we get 1 with a remainder of 17.
Use 1 as the next digit of our solution. 
Result so far: 28041.6956521
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.

Moving on to step 14:
If we divide 170 by 23, we get 7 and a remainder of 9.
Use 7 as the next digit of our solution. 
Result so far: 28041.69565217
Subtract 161 from 170 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

The final outcome is 28041.69565217, with a leftover of 9e-09.