We're dividing 81013609 by 450 
We're looking to find how many times 450 goes into 81013609.

Let's proceed to step 1:
8 divided by 450 is 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 450

Moving on to step 2:
450 can be fit into 81 0 times, resulting in a remainder of 81.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 81 to get 81.
Grab the next digit (0) from the dividend, add it to 81, then carry on: 810 / 450

Going ahead to step 3:
810 divided by 450 is 1 with a remainder of 360.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 450 from 810 leaves us with 360.
Grab the next digit (1) from the dividend, add it to 360, then carry on: 3601 / 450

Moving on to step 4:
The number 450 fits into 3601 8 times, leaving a remainder of 1.
Use 8 as the next digit of our solution. 
Result so far: 18.0
If we take 3600 away from 3601, we end up with 1.
Take the next digit (3) from the dividend and append it to 1, then repeat: 13 / 450

Let's proceed to step 5:
When dividing 13 by 450, we get 0 with a remainder of 13.
The next digit of our result is 0. 
Result so far: 180.0
If we subtract 0 from 13, we get 13.
Include the next digit (6) from the dividend after 13, then repeat: 136 / 450

Moving on to step 6:
450 can be fit into 136 0 times, resulting in a remainder of 136.
The number 0 becomes the next digit in our result. 
Result so far: 1800.0
Subtract 0 from 136 to get 136.
Append the next digit (0) from the dividend to 136 and continue with: 1360 / 450

Moving on to step 7:
The number 450 fits into 1360 3 times, leaving a remainder of 10.
Use 3 as the next digit of our solution. 
Result so far: 18003.0
Deduct 1350 from 1360 and we're left with 10.
Fetch the next digit (9) from the dividend, attach it to 10 and continue: 109 / 450

Let's proceed to step 8:
If we divide 109 by 450, we get 0 and a remainder of 109.
Record the quotient 0 as the next digit in the result. 
Result so far: 180030.0
If we subtract 0 from 109, we get 109.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1090, and continue the process.

Step 9:
The number 450 fits into 1090 2 times, leaving a remainder of 190.
The number 2 becomes the next digit in our result. 
Result so far: 180030.2
If we take 900 away from 1090, we end up with 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

On to step 10:
If we divide 1900 by 450, we get 4 and a remainder of 100.
Write down 4 as next digit of the result. 
Result so far: 180030.24
Subtracting 1800 from 1900 leaves us with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Moving on to step 11:
The number 450 fits into 1000 2 times, leaving a remainder of 100.
Use 2 as the next digit of our solution. 
Result so far: 180030.242
If we subtract 900 from 1000, we get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

On to step 12:
When dividing 1000 by 450, we get 2 with a remainder of 100.
Record the quotient 2 as the next digit in the result. 
Result so far: 180030.2422
Subtracting 900 from 1000 leaves us with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

The final result is 180030.2422 with a remainder of 0.001.