51254150 ÷ 450 
We want to divide 51254150 by 450.

Moving on to step 1:
450 goes into 5 0 times with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Include the next digit (1) from the dividend after 5, then repeat: 51 / 450

Advancing to step 2:
The number 450 fits into 51 0 times, leaving a remainder of 51.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 51 and we're left with 51.
Take the next digit (2) from the dividend and append it to 51, then repeat: 512 / 450

On to step 3:
450 goes into 512 1 times with a remainder of 62.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 450 from 512 to get 62.
Append the next digit (5) from the dividend to 62 and continue with: 625 / 450

Advancing to step 4:
450 can be fit into 625 1 times, resulting in a remainder of 175.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
Subtracting 450 from 625 leaves us with 175.
Append the next digit (4) from the dividend to 175 and continue with: 1754 / 450

Step 5:
450 goes into 1754 3 times with a remainder of 404.
Put 3 as the next digit of the answer. 
Result so far: 113.0
Subtracting 1350 from 1754 leaves us with 404.
Append the next digit (1) from the dividend to 404 and continue with: 4041 / 450

Step 6:
450 can be fit into 4041 8 times, resulting in a remainder of 441.
Put 8 as the next digit of the answer. 
Result so far: 1138.0
Subtract 3600 from 4041 to get 441.
Grab the next digit (5) from the dividend, add it to 441, then carry on: 4415 / 450

Advancing to step 7:
The number 450 fits into 4415 9 times, leaving a remainder of 365.
Put 9 as the next digit of the answer. 
Result so far: 11389.0
Subtract 4050 from 4415 to get 365.
Bring next digit (0) of the dividend behind the 365 and repeat the process: 3650 / 450

Going ahead to step 8:
If we divide 3650 by 450, we get 8 and a remainder of 50.
Use 8 as the next digit of our solution. 
Result so far: 113898.0
If we subtract 3600 from 3650, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 9:
500 divided by 450 is 1 with a remainder of 50.
Put 1 as the next digit of the answer. 
Result so far: 113898.1
Deduct 450 from 500 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 10:
500 divided by 450 is 1 with a remainder of 50.
Use 1 as the next digit of our solution. 
Result so far: 113898.11
Deduct 450 from 500 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

The final outcome is 113898.11, with a leftover of 0.05.