We look at the division of 640919 by 23 
We want to divide 640919 by 23.

On to step 1:
23 can be fit into 6 0 times, resulting in a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 23

Moving on to step 2:
64 divided by 23 is 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.
Take the next digit (0) from the dividend and append it to 18, then repeat: 180 / 23

Moving on to step 3:
180 divided by 23 is 7 with a remainder of 19.
Record the quotient 7 as the next digit in the result. 
Result so far: 27.0
If we subtract 161 from 180, we get 19.
Include the next digit (9) from the dividend after 19, then repeat: 199 / 23

Step 4:
199 divided by 23 is 8 with a remainder of 15.
Put 8 as the next digit of the answer. 
Result so far: 278.0
Subtracting 184 from 199 leaves us with 15.
Grab the next digit (1) from the dividend, add it to 15, then carry on: 151 / 23

Advancing to step 5:
When dividing 151 by 23, we get 6 with a remainder of 13.
The number 6 becomes the next digit in our result. 
Result so far: 2786.0
If we take 138 away from 151, we end up with 13.
Bring next digit (9) of the dividend behind the 13 and repeat the process: 139 / 23

On to step 6:
139 divided by 23 is 6 with a remainder of 1.
Use 6 as the next digit of our solution. 
Result so far: 27866.0
Deduct 138 from 139 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 7:
23 goes into 10 0 times with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 27866.0
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 8:
100 divided by 23 is 4 with a remainder of 8.
The number 4 becomes the next digit in our result. 
Result so far: 27866.04
Subtracting 92 from 100 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 9:
If we divide 80 by 23, we get 3 and a remainder of 11.
The next digit of our result is 3. 
Result so far: 27866.043
Subtracting 69 from 80 leaves us with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 10:
If we divide 110 by 23, we get 4 and a remainder of 18.
The number 4 becomes the next digit in our result. 
Result so far: 27866.0434
Deduct 92 from 110 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 11:
23 goes into 180 7 times with a remainder of 19.
Record the quotient 7 as the next digit in the result. 
Result so far: 27866.04347
If we take 161 away from 180, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 12:
If we divide 190 by 23, we get 8 and a remainder of 6.
Record the quotient 8 as the next digit in the result. 
Result so far: 27866.043478
If we take 184 away from 190, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 13:
When dividing 60 by 23, we get 2 with a remainder of 14.
The number 2 becomes the next digit in our result. 
Result so far: 27866.0434782
The remainder is 14 after subtracting 46 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 14:
140 divided by 23 is 6 with a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 27866.04347826
If we take 138 away from 140, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

In conclusion, the division gives 27866.04347826 with a balance of 2e-09.