666394 ÷ 23 
Let's see how many times 23 fits into 666394.

Going ahead to step 1:
The number 23 fits into 6 0 times, leaving a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 23

Step 2:
When dividing 66 by 23, we get 2 with a remainder of 20.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we take 46 away from 66, we end up with 20.
Grab the next digit (6) from the dividend, add it to 20, then carry on: 206 / 23

Step 3:
When dividing 206 by 23, we get 8 with a remainder of 22.
Use 8 as the next digit of our solution. 
Result so far: 28.0
If we take 184 away from 206, we end up with 22.
Include the next digit (3) from the dividend after 22, then repeat: 223 / 23

Going ahead to step 4:
23 can be fit into 223 9 times, resulting in a remainder of 16.
The number 9 becomes the next digit in our result. 
Result so far: 289.0
If we take 207 away from 223, we end up with 16.
Take the next digit (9) from the dividend and append it to 16, then repeat: 169 / 23

Going ahead to step 5:
23 goes into 169 7 times with a remainder of 8.
Put 7 as the next digit of the answer. 
Result so far: 2897.0
If we take 161 away from 169, we end up with 8.
Grab the next digit (4) from the dividend, add it to 8, then carry on: 84 / 23

On to step 6:
84 divided by 23 is 3 with a remainder of 15.
Use 3 as the next digit of our solution. 
Result so far: 28973.0
If we take 69 away from 84, 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.

Step 7:
150 divided by 23 is 6 with a remainder of 12.
Put 6 as the next digit of the answer. 
Result so far: 28973.6
Subtracting 138 from 150 leaves us with 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: 28973.65
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.

Step 9:
23 goes into 50 2 times with a remainder of 4.
The next digit of our result is 2. 
Result so far: 28973.652
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.

On to step 10:
If we divide 40 by 23, we get 1 and a remainder of 17.
Use 1 as the next digit of our solution. 
Result so far: 28973.6521
If we subtract 23 from 40, we 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.

Let's proceed to step 11:
If we divide 170 by 23, we get 7 and a remainder of 9.
The next digit of our result is 7. 
Result so far: 28973.65217
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.

Moving on to step 12:
23 can be fit into 90 3 times, resulting in a remainder of 21.
The next digit of our result is 3. 
Result so far: 28973.652173
The remainder is 21 after subtracting 69 from 90.
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:
23 can be fit into 210 9 times, resulting in a remainder of 3.
Record the quotient 9 as the next digit in the result. 
Result so far: 28973.6521739
The remainder is 3 after subtracting 207 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 14:
23 can be fit into 30 1 times, resulting in a remainder of 7.
Use 1 as the next digit of our solution. 
Result so far: 28973.65217391
Subtract 23 from 30 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

In conclusion, the division gives 28973.65217391 with a balance of 7e-09.