57728548 ÷ 81 
We're looking to find how many times 81 goes into 57728548.

Step 1:
When dividing 5 by 81, we get 0 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.
Append the next digit (7) from the dividend to 5 and continue with: 57 / 81

Let's proceed to step 2:
The number 81 fits into 57 0 times, leaving a remainder of 57.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 57 after subtracting 0 from 57.
Take the next digit (7) from the dividend and append it to 57, then repeat: 577 / 81

On to step 3:
If we divide 577 by 81, we get 7 and a remainder of 10.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
If we take 567 away from 577, we end up with 10.
Bring next digit (2) of the dividend behind the 10 and repeat the process: 102 / 81

Let's proceed to step 4:
81 goes into 102 1 times with a remainder of 21.
Write down 1 as next digit of the result. 
Result so far: 71.0
If we subtract 81 from 102, we get 21.
Include the next digit (8) from the dividend after 21, then repeat: 218 / 81

On to step 5:
If we divide 218 by 81, we get 2 and a remainder of 56.
Use 2 as the next digit of our solution. 
Result so far: 712.0
Subtracting 162 from 218 leaves us with 56.
Take the next digit (5) from the dividend and append it to 56, then repeat: 565 / 81

Moving on to step 6:
The number 81 fits into 565 6 times, leaving a remainder of 79.
Record the quotient 6 as the next digit in the result. 
Result so far: 7126.0
Subtract 486 from 565 to get 79.
Grab the next digit (4) from the dividend, add it to 79, then carry on: 794 / 81

Step 7:
The number 81 fits into 794 9 times, leaving a remainder of 65.
The number 9 becomes the next digit in our result. 
Result so far: 71269.0
Deduct 729 from 794 and we're left with 65.
Take the next digit (8) from the dividend and append it to 65, then repeat: 658 / 81

Moving on to step 8:
If we divide 658 by 81, we get 8 and a remainder of 10.
Use 8 as the next digit of our solution. 
Result so far: 712698.0
If we take 648 away from 658, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 9:
81 can be fit into 100 1 times, resulting in a remainder of 19.
Record the quotient 1 as the next digit in the result. 
Result so far: 712698.1
Subtracting 81 from 100 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Moving on to step 10:
81 can be fit into 190 2 times, resulting in a remainder of 28.
Write down 2 as next digit of the result. 
Result so far: 712698.12
Subtract 162 from 190 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 11:
81 goes into 280 3 times with a remainder of 37.
Record the quotient 3 as the next digit in the result. 
Result so far: 712698.123
Deduct 243 from 280 and we're left with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Going ahead to step 12:
370 divided by 81 is 4 with a remainder of 46.
The next digit of our result is 4. 
Result so far: 712698.1234
If we take 324 away from 370, we end up with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Going ahead to step 13:
The number 81 fits into 460 5 times, leaving a remainder of 55.
Write down 5 as next digit of the result. 
Result so far: 712698.12345
If we subtract 405 from 460, we get 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Let's proceed to step 14:
81 can be fit into 550 6 times, resulting in a remainder of 64.
Use 6 as the next digit of our solution. 
Result so far: 712698.123456
Subtracting 486 from 550 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Let's proceed to step 15:
The number 81 fits into 640 7 times, leaving a remainder of 73.
The number 7 becomes the next digit in our result. 
Result so far: 712698.1234567
Subtract 567 from 640 to get 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Step 16:
81 goes into 730 9 times with a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 712698.12345679
If we subtract 729 from 730, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Our division results in 712698.12345679 with a remaining 1e-09.