Let's divide 81187856 by 77
We want to divide 81187856 by 77.

Step 1:
If we divide 8 by 77, we get 0 and a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Append the next digit (1) from the dividend to 8 and continue with: 81 / 77

Let's proceed to step 2:
If we divide 81 by 77, we get 1 and a remainder of 4.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 77 away from 81, we end up with 4.
Append the next digit (1) from the dividend to 4 and continue with: 41 / 77

Going ahead to step 3:
If we divide 41 by 77, we get 0 and a remainder of 41.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
If we subtract 0 from 41, we get 41.
Append the next digit (8) from the dividend to 41 and continue with: 418 / 77

Moving on to step 4:
418 divided by 77 is 5 with a remainder of 33.
Put 5 as the next digit of the answer. 
Result so far: 105.0
If we subtract 385 from 418, we get 33.
Grab the next digit (7) from the dividend, add it to 33, then carry on: 337 / 77

Going ahead to step 5:
If we divide 337 by 77, we get 4 and a remainder of 29.
Use 4 as the next digit of our solution. 
Result so far: 1054.0
Subtracting 308 from 337 leaves us with 29.
Bring next digit (8) of the dividend behind the 29 and repeat the process: 298 / 77

Let's proceed to step 6:
If we divide 298 by 77, we get 3 and a remainder of 67.
The next digit of our result is 3. 
Result so far: 10543.0
Subtracting 231 from 298 leaves us with 67.
Append the next digit (5) from the dividend to 67 and continue with: 675 / 77

On to step 7:
77 can be fit into 675 8 times, resulting in a remainder of 59.
The next digit of our result is 8. 
Result so far: 105438.0
Deduct 616 from 675 and we're left with 59.
Grab the next digit (6) from the dividend, add it to 59, then carry on: 596 / 77

Advancing to step 8:
77 goes into 596 7 times with a remainder of 57.
Use 7 as the next digit of our solution. 
Result so far: 1054387.0
Subtract 539 from 596 to get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Going ahead to step 9:
If we divide 570 by 77, we get 7 and a remainder of 31.
The next digit of our result is 7. 
Result so far: 1054387.7
Subtract 539 from 570 to get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Let's proceed to step 10:
When dividing 310 by 77, we get 4 with a remainder of 2.
The number 4 becomes the next digit in our result. 
Result so far: 1054387.74
Subtract 308 from 310 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Moving on to step 11:
When dividing 20 by 77, we get 0 with a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 1054387.74
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 12:
200 divided by 77 is 2 with a remainder of 46.
The number 2 becomes the next digit in our result. 
Result so far: 1054387.7402
The remainder is 46 after subtracting 154 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 13:
The number 77 fits into 460 5 times, leaving a remainder of 75.
The number 5 becomes the next digit in our result. 
Result so far: 1054387.74025
If we subtract 385 from 460, we get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Advancing to step 14:
77 goes into 750 9 times with a remainder of 57.
Use 9 as the next digit of our solution. 
Result so far: 1054387.740259
The remainder is 57 after subtracting 693 from 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

On to step 15:
The number 77 fits into 570 7 times, leaving a remainder of 31.
Record the quotient 7 as the next digit in the result. 
Result so far: 1054387.7402597
Subtract 539 from 570 to get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Step 16:
When dividing 310 by 77, we get 4 with a remainder of 2.
Put 4 as the next digit of the answer. 
Result so far: 1054387.74025974
If we subtract 308 from 310, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Our division results in 1054387.74025974 with a remaining 2e-09.