Let's divide 408739 by 23
We want to figure out the number of times 408739 can be divided by 23.

Step 1:
If we divide 4 by 23, we get 0 and a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Take the next digit (0) from the dividend and append it to 4, then repeat: 40 / 23

Step 2:
23 can be fit into 40 1 times, resulting in a remainder of 17.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 23 from 40 and we're left with 17.
Fetch the next digit (8) from the dividend, attach it to 17 and continue: 178 / 23

Advancing to step 3:
When dividing 178 by 23, we get 7 with a remainder of 17.
The next digit of our result is 7. 
Result so far: 17.0
Subtract 161 from 178 to get 17.
Grab the next digit (7) from the dividend, add it to 17, then carry on: 177 / 23

Going ahead to step 4:
If we divide 177 by 23, we get 7 and a remainder of 16.
Record the quotient 7 as the next digit in the result. 
Result so far: 177.0
Subtracting 161 from 177 leaves us with 16.
Bring next digit (3) of the dividend behind the 16 and repeat the process: 163 / 23

Step 5:
When dividing 163 by 23, we get 7 with a remainder of 2.
The number 7 becomes the next digit in our result. 
Result so far: 1777.0
Subtracting 161 from 163 leaves us with 2.
Grab the next digit (9) from the dividend, add it to 2, then carry on: 29 / 23

On to step 6:
When dividing 29 by 23, we get 1 with a remainder of 6.
The next digit of our result is 1. 
Result so far: 17771.0
If we take 23 away from 29, 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.

Moving on to step 7:
23 goes into 60 2 times with a remainder of 14.
Use 2 as the next digit of our solution. 
Result so far: 17771.2
Subtract 46 from 60 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Advancing to step 8:
23 can be fit into 140 6 times, resulting in a remainder of 2.
Record the quotient 6 as the next digit in the result. 
Result so far: 17771.26
If we subtract 138 from 140, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 9:
The number 23 fits into 20 0 times, leaving a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 17771.26
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 10:
200 divided by 23 is 8 with a remainder of 16.
Put 8 as the next digit of the answer. 
Result so far: 17771.2608
If we subtract 184 from 200, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 11:
If we divide 160 by 23, we get 6 and a remainder of 22.
The next digit of our result is 6. 
Result so far: 17771.26086
If we take 138 away from 160, we end up 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.

Advancing to step 12:
When dividing 220 by 23, we get 9 with a remainder of 13.
Put 9 as the next digit of the answer. 
Result so far: 17771.260869
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.

Going ahead to step 13:
23 goes into 130 5 times with a remainder of 15.
The next digit of our result is 5. 
Result so far: 17771.2608695
If we take 115 away from 130, we end up 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.

Let's proceed to step 14:
150 divided by 23 is 6 with a remainder of 12.
The number 6 becomes the next digit in our result. 
Result so far: 17771.26086956
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.

After the division, we end up with 17771.26086956 and a remainder of 1.2e-08.