We're dividing 172293 by 23 
Let's see how many times 23 fits into 172293.

Step 1:
23 can be fit into 1 0 times, resulting in a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Fetch the next digit (7) from the dividend, attach it to 1 and continue: 17 / 23

Step 2:
17 divided by 23 is 0 with a remainder of 17.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 17, we end up with 17.
Bring next digit (2) of the dividend behind the 17 and repeat the process: 172 / 23

Moving on to step 3:
When dividing 172 by 23, we get 7 with a remainder of 11.
The next digit of our result is 7. 
Result so far: 7.0
If we take 161 away from 172, we end up with 11.
Append the next digit (2) from the dividend to 11 and continue with: 112 / 23

On to step 4:
112 divided by 23 is 4 with a remainder of 20.
Write down 4 as next digit of the result. 
Result so far: 74.0
Deduct 92 from 112 and we're left with 20.
Grab the next digit (9) from the dividend, add it to 20, then carry on: 209 / 23

Moving on to step 5:
23 can be fit into 209 9 times, resulting in a remainder of 2.
Put 9 as the next digit of the answer. 
Result so far: 749.0
Deduct 207 from 209 and we're left with 2.
Grab the next digit (3) from the dividend, add it to 2, then carry on: 23 / 23

Step 6:
The number 23 fits into 23 1 times, leaving a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 7491.0
If we subtract 23 from 23, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 7:
0 divided by 23 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 7491.0
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 8:
If we divide 0 by 23, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 7491.0
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 7491.0 with a remaining 0.0.