20584963 ÷ 45 
We want to divide 20584963 by 45.

Moving on to step 1:
45 can be fit into 2 0 times, resulting in a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Grab the next digit (0) from the dividend, add it to 2, then carry on: 20 / 45

Moving on to step 2:
45 goes into 20 0 times with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 20 and we're left with 20.
Grab the next digit (5) from the dividend, add it to 20, then carry on: 205 / 45

Step 3:
45 can be fit into 205 4 times, resulting in a remainder of 25.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtract 180 from 205 to get 25.
Take the next digit (8) from the dividend and append it to 25, then repeat: 258 / 45

Moving on to step 4:
When dividing 258 by 45, we get 5 with a remainder of 33.
The next digit of our result is 5. 
Result so far: 45.0
If we subtract 225 from 258, we get 33.
Grab the next digit (4) from the dividend, add it to 33, then carry on: 334 / 45

Advancing to step 5:
If we divide 334 by 45, we get 7 and a remainder of 19.
The number 7 becomes the next digit in our result. 
Result so far: 457.0
If we take 315 away from 334, we end up with 19.
Bring next digit (9) of the dividend behind the 19 and repeat the process: 199 / 45

On to step 6:
If we divide 199 by 45, we get 4 and a remainder of 19.
Use 4 as the next digit of our solution. 
Result so far: 4574.0
Subtract 180 from 199 to get 19.
Take the next digit (6) from the dividend and append it to 19, then repeat: 196 / 45

Moving on to step 7:
196 divided by 45 is 4 with a remainder of 16.
The number 4 becomes the next digit in our result. 
Result so far: 45744.0
The remainder is 16 after subtracting 180 from 196.
Include the next digit (3) from the dividend after 16, then repeat: 163 / 45

Advancing to step 8:
If we divide 163 by 45, we get 3 and a remainder of 28.
Put 3 as the next digit of the answer. 
Result so far: 457443.0
Subtracting 135 from 163 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Going ahead to step 9:
45 goes into 280 6 times with a remainder of 10.
Use 6 as the next digit of our solution. 
Result so far: 457443.6
If we take 270 away from 280, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 10:
When dividing 100 by 45, we get 2 with a remainder of 10.
The number 2 becomes the next digit in our result. 
Result so far: 457443.62
The remainder is 10 after subtracting 90 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 11:
45 can be fit into 100 2 times, resulting in a remainder of 10.
The next digit of our result is 2. 
Result so far: 457443.622
Subtract 90 from 100 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

After the division, we end up with 457443.622 and a remainder of 0.001.