We're dividing 20469490 by 45 
We're looking to find how many times 45 goes into 20469490.

Step 1:
2 divided by 45 is 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Append the next digit (0) from the dividend to 2 and continue with: 20 / 45

On to step 2:
45 can be fit into 20 0 times, resulting in a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 20, we end up with 20.
Grab the next digit (4) from the dividend, add it to 20, then carry on: 204 / 45

Advancing to step 3:
204 divided by 45 is 4 with a remainder of 24.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtracting 180 from 204 leaves us with 24.
Append the next digit (6) from the dividend to 24 and continue with: 246 / 45

Moving on to step 4:
When dividing 246 by 45, we get 5 with a remainder of 21.
Put 5 as the next digit of the answer. 
Result so far: 45.0
Deduct 225 from 246 and we're left with 21.
Include the next digit (9) from the dividend after 21, then repeat: 219 / 45

Step 5:
The number 45 fits into 219 4 times, leaving a remainder of 39.
The number 4 becomes the next digit in our result. 
Result so far: 454.0
The remainder is 39 after subtracting 180 from 219.
Fetch the next digit (4) from the dividend, attach it to 39 and continue: 394 / 45

Advancing to step 6:
45 can be fit into 394 8 times, resulting in a remainder of 34.
Put 8 as the next digit of the answer. 
Result so far: 4548.0
If we take 360 away from 394, we end up with 34.
Bring next digit (9) of the dividend behind the 34 and repeat the process: 349 / 45

Moving on to step 7:
If we divide 349 by 45, we get 7 and a remainder of 34.
Record the quotient 7 as the next digit in the result. 
Result so far: 45487.0
Subtract 315 from 349 to get 34.
Grab the next digit (0) from the dividend, add it to 34, then carry on: 340 / 45

Moving on to step 8:
When dividing 340 by 45, we get 7 with a remainder of 25.
The number 7 becomes the next digit in our result. 
Result so far: 454877.0
Subtract 315 from 340 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Advancing to step 9:
45 goes into 250 5 times with a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 454877.5
If we take 225 away from 250, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Step 10:
45 can be fit into 250 5 times, resulting in a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 454877.55
If we subtract 225 from 250, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

In conclusion, the division gives 454877.55 with a balance of 0.025.