Let's divide 623873 by 45
Let's see how many times 45 fits into 623873.

Advancing to step 1:
6 divided by 45 is 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Append the next digit (2) from the dividend to 6 and continue with: 62 / 45

Moving on to step 2:
The number 45 fits into 62 1 times, leaving a remainder of 17.
The next digit of our result is 1. 
Result so far: 1.0
If we take 45 away from 62, we end up with 17.
Append the next digit (3) from the dividend to 17 and continue with: 173 / 45

Advancing to step 3:
45 can be fit into 173 3 times, resulting in a remainder of 38.
Put 3 as the next digit of the answer. 
Result so far: 13.0
The remainder is 38 after subtracting 135 from 173.
Fetch the next digit (8) from the dividend, attach it to 38 and continue: 388 / 45

Moving on to step 4:
45 can be fit into 388 8 times, resulting in a remainder of 28.
The next digit of our result is 8. 
Result so far: 138.0
If we subtract 360 from 388, we get 28.
Fetch the next digit (7) from the dividend, attach it to 28 and continue: 287 / 45

On to step 5:
45 can be fit into 287 6 times, resulting in a remainder of 17.
Write down 6 as next digit of the result. 
Result so far: 1386.0
Subtracting 270 from 287 leaves us with 17.
Grab the next digit (3) from the dividend, add it to 17, then carry on: 173 / 45

Let's proceed to step 6:
45 goes into 173 3 times with a remainder of 38.
Record the quotient 3 as the next digit in the result. 
Result so far: 13863.0
Subtract 135 from 173 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Going ahead to step 7:
When dividing 380 by 45, we get 8 with a remainder of 20.
Put 8 as the next digit of the answer. 
Result so far: 13863.8
If we subtract 360 from 380, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 8:
When dividing 200 by 45, we get 4 with a remainder of 20.
Write down 4 as next digit of the result. 
Result so far: 13863.84
If we take 180 away from 200, we end up 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.

On to step 9:
The number 45 fits into 200 4 times, leaving a remainder of 20.
The number 4 becomes the next digit in our result. 
Result so far: 13863.844
Deduct 180 from 200 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.

After the division, we end up with 13863.844 and a remainder of 0.002.