620579 ÷ 45 
Let's see how many times 45 fits into 620579.

Step 1:
When dividing 6 by 45, we get 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Grab the next digit (2) from the dividend, add it to 6, then carry on: 62 / 45

On to step 2:
62 divided by 45 is 1 with a remainder of 17.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 17 after subtracting 45 from 62.
Fetch the next digit (0) from the dividend, attach it to 17 and continue: 170 / 45

Moving on to step 3:
45 can be fit into 170 3 times, resulting in a remainder of 35.
Use 3 as the next digit of our solution. 
Result so far: 13.0
If we subtract 135 from 170, we get 35.
Include the next digit (5) from the dividend after 35, then repeat: 355 / 45

Advancing to step 4:
355 divided by 45 is 7 with a remainder of 40.
The next digit of our result is 7. 
Result so far: 137.0
If we subtract 315 from 355, we get 40.
Grab the next digit (7) from the dividend, add it to 40, then carry on: 407 / 45

Let's proceed to step 5:
The number 45 fits into 407 9 times, leaving a remainder of 2.
The number 9 becomes the next digit in our result. 
Result so far: 1379.0
If we take 405 away from 407, we end up with 2.
Take the next digit (9) from the dividend and append it to 2, then repeat: 29 / 45

Going ahead to step 6:
45 can be fit into 29 0 times, resulting in a remainder of 29.
Write down 0 as next digit of the result. 
Result so far: 13790.0
The remainder is 29 after subtracting 0 from 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Moving on to step 7:
290 divided by 45 is 6 with a remainder of 20.
Record the quotient 6 as the next digit in the result. 
Result so far: 13790.6
If we take 270 away from 290, 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.

Moving on to step 8:
200 divided by 45 is 4 with a remainder of 20.
Use 4 as the next digit of our solution. 
Result so far: 13790.64
Subtract 180 from 200 to 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.

Step 9:
45 goes into 200 4 times with a remainder of 20.
Record the quotient 4 as the next digit in the result. 
Result so far: 13790.644
Subtract 180 from 200 to 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.

Our division results in 13790.644 with a remaining 0.002.