66556677 ÷ 728 
Our goal is to divide 66556677 by 728.

Going ahead to step 1:
If we divide 6 by 728, we get 0 and a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 728

Going ahead to step 2:
The number 728 fits into 66 0 times, leaving a remainder of 66.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 66 leaves us with 66.
Bring next digit (5) of the dividend behind the 66 and repeat the process: 665 / 728

On to step 3:
When dividing 665 by 728, we get 0 with a remainder of 665.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 665 to get 665.
Bring next digit (5) of the dividend behind the 665 and repeat the process: 6655 / 728

Moving on to step 4:
6655 divided by 728 is 9 with a remainder of 103.
Put 9 as the next digit of the answer. 
Result so far: 9.0
Subtracting 6552 from 6655 leaves us with 103.
Grab the next digit (6) from the dividend, add it to 103, then carry on: 1036 / 728

Let's proceed to step 5:
If we divide 1036 by 728, we get 1 and a remainder of 308.
Put 1 as the next digit of the answer. 
Result so far: 91.0
Subtract 728 from 1036 to get 308.
Append the next digit (6) from the dividend to 308 and continue with: 3086 / 728

Step 6:
3086 divided by 728 is 4 with a remainder of 174.
Put 4 as the next digit of the answer. 
Result so far: 914.0
Subtracting 2912 from 3086 leaves us with 174.
Include the next digit (7) from the dividend after 174, then repeat: 1747 / 728

Advancing to step 7:
1747 divided by 728 is 2 with a remainder of 291.
Write down 2 as next digit of the result. 
Result so far: 9142.0
Deduct 1456 from 1747 and we're left with 291.
Append the next digit (7) from the dividend to 291 and continue with: 2917 / 728

Moving on to step 8:
728 goes into 2917 4 times with a remainder of 5.
Use 4 as the next digit of our solution. 
Result so far: 91424.0
The remainder is 5 after subtracting 2912 from 2917.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 9:
50 divided by 728 is 0 with a remainder of 50.
Record the quotient 0 as the next digit in the result. 
Result so far: 91424.0
If we subtract 0 from 50, 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.

On to step 10:
The number 728 fits into 500 0 times, leaving a remainder of 500.
The number 0 becomes the next digit in our result. 
Result so far: 91424.0
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.

The final result is 91424.0 with a remainder of 0.5.