81241270 ÷ 450 
We want to divide 81241270 by 450.

Going ahead to step 1:
If we divide 8 by 450, we get 0 and a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 450

Advancing to step 2:
81 divided by 450 is 0 with a remainder of 81.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 81 to get 81.
Include the next digit (2) from the dividend after 81, then repeat: 812 / 450

Moving on to step 3:
450 goes into 812 1 times with a remainder of 362.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 362 after subtracting 450 from 812.
Include the next digit (4) from the dividend after 362, then repeat: 3624 / 450

Going ahead to step 4:
The number 450 fits into 3624 8 times, leaving a remainder of 24.
Use 8 as the next digit of our solution. 
Result so far: 18.0
Subtracting 3600 from 3624 leaves us with 24.
Take the next digit (1) from the dividend and append it to 24, then repeat: 241 / 450

Let's proceed to step 5:
When dividing 241 by 450, we get 0 with a remainder of 241.
Write down 0 as next digit of the result. 
Result so far: 180.0
Subtract 0 from 241 to get 241.
Bring next digit (2) of the dividend behind the 241 and repeat the process: 2412 / 450

Advancing to step 6:
If we divide 2412 by 450, we get 5 and a remainder of 162.
Write down 5 as next digit of the result. 
Result so far: 1805.0
Subtract 2250 from 2412 to get 162.
Grab the next digit (7) from the dividend, add it to 162, then carry on: 1627 / 450

Let's proceed to step 7:
450 goes into 1627 3 times with a remainder of 277.
Put 3 as the next digit of the answer. 
Result so far: 18053.0
If we subtract 1350 from 1627, we get 277.
Grab the next digit (0) from the dividend, add it to 277, then carry on: 2770 / 450

Moving on to step 8:
450 goes into 2770 6 times with a remainder of 70.
Record the quotient 6 as the next digit in the result. 
Result so far: 180536.0
If we take 2700 away from 2770, we end up with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 9:
450 goes into 700 1 times with a remainder of 250.
Put 1 as the next digit of the answer. 
Result so far: 180536.1
Deduct 450 from 700 and we're left with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

On to step 10:
When dividing 2500 by 450, we get 5 with a remainder of 250.
Record the quotient 5 as the next digit in the result. 
Result so far: 180536.15
Subtract 2250 from 2500 to get 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Moving on to step 11:
2500 divided by 450 is 5 with a remainder of 250.
Put 5 as the next digit of the answer. 
Result so far: 180536.155
Subtract 2250 from 2500 to get 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

After the division, we end up with 180536.155 and a remainder of 0.025.