66456050 ÷ 800 
Let's see how many times 800 fits into 66456050.

Step 1:
The number 800 fits into 6 0 times, leaving a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 800

Moving on to step 2:
When dividing 66 by 800, we get 0 with a remainder of 66.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 66 after subtracting 0 from 66.
Take the next digit (4) from the dividend and append it to 66, then repeat: 664 / 800

Step 3:
If we divide 664 by 800, we get 0 and a remainder of 664.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 664 leaves us with 664.
Include the next digit (5) from the dividend after 664, then repeat: 6645 / 800

Let's proceed to step 4:
If we divide 6645 by 800, we get 8 and a remainder of 245.
The next digit of our result is 8. 
Result so far: 8.0
If we take 6400 away from 6645, we end up with 245.
Grab the next digit (6) from the dividend, add it to 245, then carry on: 2456 / 800

On to step 5:
800 goes into 2456 3 times with a remainder of 56.
The number 3 becomes the next digit in our result. 
Result so far: 83.0
Subtracting 2400 from 2456 leaves us with 56.
Include the next digit (0) from the dividend after 56, then repeat: 560 / 800

Advancing to step 6:
When dividing 560 by 800, we get 0 with a remainder of 560.
The number 0 becomes the next digit in our result. 
Result so far: 830.0
Subtract 0 from 560 to get 560.
Grab the next digit (5) from the dividend, add it to 560, then carry on: 5605 / 800

Advancing to step 7:
5605 divided by 800 is 7 with a remainder of 5.
Write down 7 as next digit of the result. 
Result so far: 8307.0
Deduct 5600 from 5605 and we're left with 5.
Fetch the next digit (0) from the dividend, attach it to 5 and continue: 50 / 800

Let's proceed to step 8:
50 divided by 800 is 0 with a remainder of 50.
The next digit of our result is 0. 
Result so far: 83070.0
Subtract 0 from 50 to 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.

Going ahead to step 9:
If we divide 500 by 800, we get 0 and a remainder of 500.
Put 0 as the next digit of the answer. 
Result so far: 83070.0
Deduct 0 from 500 and we're left with 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

Step 10:
800 can be fit into 5000 6 times, resulting in a remainder of 200.
Put 6 as the next digit of the answer. 
Result so far: 83070.06
Deduct 4800 from 5000 and we're left with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Let's proceed to step 11:
The number 800 fits into 2000 2 times, leaving a remainder of 400.
The number 2 becomes the next digit in our result. 
Result so far: 83070.062
Subtracting 1600 from 2000 leaves us with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Advancing to step 12:
800 can be fit into 4000 5 times, resulting in a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 83070.0625
Deduct 4000 from 4000 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 13:
If we divide 0 by 800, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 83070.0625
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 14:
0 divided by 800 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 83070.0625
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 83070.0625 with a remainder of 0.0.