54151471 divided by 800 
Our goal is to divide 54151471 by 800.

Step 1:
5 divided by 800 is 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Bring next digit (4) of the dividend behind the 5 and repeat the process: 54 / 800

Advancing to step 2:
800 can be fit into 54 0 times, resulting in a remainder of 54.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 54 after subtracting 0 from 54.
Bring next digit (1) of the dividend behind the 54 and repeat the process: 541 / 800

Going ahead to step 3:
541 divided by 800 is 0 with a remainder of 541.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 541, we end up with 541.
Grab the next digit (5) from the dividend, add it to 541, then carry on: 5415 / 800

Let's proceed to step 4:
800 can be fit into 5415 6 times, resulting in a remainder of 615.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
If we take 4800 away from 5415, we end up with 615.
Grab the next digit (1) from the dividend, add it to 615, then carry on: 6151 / 800

Going ahead to step 5:
800 goes into 6151 7 times with a remainder of 551.
Put 7 as the next digit of the answer. 
Result so far: 67.0
If we subtract 5600 from 6151, we get 551.
Take the next digit (4) from the dividend and append it to 551, then repeat: 5514 / 800

Moving on to step 6:
The number 800 fits into 5514 6 times, leaving a remainder of 714.
Use 6 as the next digit of our solution. 
Result so far: 676.0
If we take 4800 away from 5514, we end up with 714.
Take the next digit (7) from the dividend and append it to 714, then repeat: 7147 / 800

Step 7:
If we divide 7147 by 800, we get 8 and a remainder of 747.
The next digit of our result is 8. 
Result so far: 6768.0
Subtracting 6400 from 7147 leaves us with 747.
Include the next digit (1) from the dividend after 747, then repeat: 7471 / 800

Let's proceed to step 8:
When dividing 7471 by 800, we get 9 with a remainder of 271.
The number 9 becomes the next digit in our result. 
Result so far: 67689.0
Deduct 7200 from 7471 and we're left with 271.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2710, and continue the process.

Advancing to step 9:
2710 divided by 800 is 3 with a remainder of 310.
The next digit of our result is 3. 
Result so far: 67689.3
Subtracting 2400 from 2710 leaves us with 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Advancing to step 10:
The number 800 fits into 3100 3 times, leaving a remainder of 700.
Put 3 as the next digit of the answer. 
Result so far: 67689.33
Deduct 2400 from 3100 and we're left with 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7000, and continue the process.

Our division results in 67689.33 with a remaining 0.7.