578485 ÷ 23 
Let's see how many times 23 fits into 578485.

Going ahead to step 1:
The number 23 fits into 5 0 times, leaving a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Fetch the next digit (7) from the dividend, attach it to 5 and continue: 57 / 23

Going ahead to step 2:
If we divide 57 by 23, we get 2 and a remainder of 11.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we take 46 away from 57, we end up with 11.
Grab the next digit (8) from the dividend, add it to 11, then carry on: 118 / 23

On to step 3:
23 goes into 118 5 times with a remainder of 3.
Put 5 as the next digit of the answer. 
Result so far: 25.0
If we subtract 115 from 118, we get 3.
Append the next digit (4) from the dividend to 3 and continue with: 34 / 23

Going ahead to step 4:
When dividing 34 by 23, we get 1 with a remainder of 11.
The next digit of our result is 1. 
Result so far: 251.0
Subtracting 23 from 34 leaves us with 11.
Fetch the next digit (8) from the dividend, attach it to 11 and continue: 118 / 23

Moving on to step 5:
When dividing 118 by 23, we get 5 with a remainder of 3.
Write down 5 as next digit of the result. 
Result so far: 2515.0
Deduct 115 from 118 and we're left with 3.
Include the next digit (5) from the dividend after 3, then repeat: 35 / 23

Step 6:
23 can be fit into 35 1 times, resulting in a remainder of 12.
Put 1 as the next digit of the answer. 
Result so far: 25151.0
If we take 23 away from 35, we end up 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.

Advancing to step 7:
120 divided by 23 is 5 with a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 25151.5
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.

Moving on to step 8:
When dividing 50 by 23, we get 2 with a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 25151.52
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.

Let's proceed to step 9:
If we divide 40 by 23, we get 1 and a remainder of 17.
Put 1 as the next digit of the answer. 
Result so far: 25151.521
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.

Advancing to step 10:
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: 25151.5217
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.

Advancing to step 11:
If we divide 90 by 23, we get 3 and a remainder of 21.
The number 3 becomes the next digit in our result. 
Result so far: 25151.52173
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.

Let's proceed to step 12:
When dividing 210 by 23, we get 9 with a remainder of 3.
Put 9 as the next digit of the answer. 
Result so far: 25151.521739
Deduct 207 from 210 and we're left with 3.
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 13:
When dividing 30 by 23, we get 1 with a remainder of 7.
The next digit of our result is 1. 
Result so far: 25151.5217391
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.

Moving on to step 14:
23 goes into 70 3 times with a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 25151.52173913
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 quotient of the division is 25151.52173913, and the remainder is 1e-09.