Let's divide 363573 by 45
We're looking to find how many times 45 goes into 363573.

Let's proceed to step 1:
45 goes into 3 0 times with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Append the next digit (6) from the dividend to 3 and continue with: 36 / 45

On to step 2:
45 goes into 36 0 times with a remainder of 36.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 36 to get 36.
Bring next digit (3) of the dividend behind the 36 and repeat the process: 363 / 45

Moving on to step 3:
If we divide 363 by 45, we get 8 and a remainder of 3.
The next digit of our result is 8. 
Result so far: 8.0
Subtracting 360 from 363 leaves us with 3.
Include the next digit (5) from the dividend after 3, then repeat: 35 / 45

Moving on to step 4:
If we divide 35 by 45, we get 0 and a remainder of 35.
The number 0 becomes the next digit in our result. 
Result so far: 80.0
Deduct 0 from 35 and we're left with 35.
Bring next digit (7) of the dividend behind the 35 and repeat the process: 357 / 45

Moving on to step 5:
45 can be fit into 357 7 times, resulting in a remainder of 42.
Use 7 as the next digit of our solution. 
Result so far: 807.0
Subtracting 315 from 357 leaves us with 42.
Take the next digit (3) from the dividend and append it to 42, then repeat: 423 / 45

Moving on to step 6:
45 goes into 423 9 times with a remainder of 18.
The number 9 becomes the next digit in our result. 
Result so far: 8079.0
The remainder is 18 after subtracting 405 from 423.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 7:
The number 45 fits into 180 4 times, leaving a remainder of 0.
The number 4 becomes the next digit in our result. 
Result so far: 8079.4
If we subtract 180 from 180, 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.

Going ahead to step 8:
If we divide 0 by 45, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 8079.4
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.

Step 9:
The number 45 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 8079.4
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.

After the division, we end up with 8079.4 and a remainder of 0.0.