77538780 divided by 869 
Our goal is to divide 77538780 by 869.

Let's proceed to step 1:
If we divide 7 by 869, we get 0 and a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Grab the next digit (7) from the dividend, add it to 7, then carry on: 77 / 869

Advancing to step 2:
If we divide 77 by 869, we get 0 and a remainder of 77.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 77 leaves us with 77.
Fetch the next digit (5) from the dividend, attach it to 77 and continue: 775 / 869

On to step 3:
775 divided by 869 is 0 with a remainder of 775.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 775 to get 775.
Grab the next digit (3) from the dividend, add it to 775, then carry on: 7753 / 869

Advancing to step 4:
If we divide 7753 by 869, we get 8 and a remainder of 801.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
The remainder is 801 after subtracting 6952 from 7753.
Take the next digit (8) from the dividend and append it to 801, then repeat: 8018 / 869

On to step 5:
If we divide 8018 by 869, we get 9 and a remainder of 197.
The number 9 becomes the next digit in our result. 
Result so far: 89.0
If we subtract 7821 from 8018, we get 197.
Fetch the next digit (7) from the dividend, attach it to 197 and continue: 1977 / 869

Moving on to step 6:
If we divide 1977 by 869, we get 2 and a remainder of 239.
Use 2 as the next digit of our solution. 
Result so far: 892.0
Deduct 1738 from 1977 and we're left with 239.
Bring next digit (8) of the dividend behind the 239 and repeat the process: 2398 / 869

Step 7:
The number 869 fits into 2398 2 times, leaving a remainder of 660.
Write down 2 as next digit of the result. 
Result so far: 8922.0
Deduct 1738 from 2398 and we're left with 660.
Append the next digit (0) from the dividend to 660 and continue with: 6600 / 869

On to step 8:
869 goes into 6600 7 times with a remainder of 517.
The number 7 becomes the next digit in our result. 
Result so far: 89227.0
Subtracting 6083 from 6600 leaves us with 517.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5170, and continue the process.

Step 9:
869 can be fit into 5170 5 times, resulting in a remainder of 825.
The next digit of our result is 5. 
Result so far: 89227.5
Subtract 4345 from 5170 to get 825.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8250, and continue the process.

Step 10:
The number 869 fits into 8250 9 times, leaving a remainder of 429.
The number 9 becomes the next digit in our result. 
Result so far: 89227.59
Subtract 7821 from 8250 to get 429.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4290, and continue the process.

Step 11:
869 can be fit into 4290 4 times, resulting in a remainder of 814.
Put 4 as the next digit of the answer. 
Result so far: 89227.594
The remainder is 814 after subtracting 3476 from 4290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8140, and continue the process.

Let's proceed to step 12:
If we divide 8140 by 869, we get 9 and a remainder of 319.
Put 9 as the next digit of the answer. 
Result so far: 89227.5949
Subtract 7821 from 8140 to get 319.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3190, and continue the process.

Moving on to step 13:
When dividing 3190 by 869, we get 3 with a remainder of 583.
Record the quotient 3 as the next digit in the result. 
Result so far: 89227.59493
Subtract 2607 from 3190 to get 583.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5830, and continue the process.

On to step 14:
The number 869 fits into 5830 6 times, leaving a remainder of 616.
Use 6 as the next digit of our solution. 
Result so far: 89227.594936
Deduct 5214 from 5830 and we're left with 616.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6160, and continue the process.

Moving on to step 15:
When dividing 6160 by 869, we get 7 with a remainder of 77.
Write down 7 as next digit of the result. 
Result so far: 89227.5949367
Subtracting 6083 from 6160 leaves us with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Advancing to step 16:
869 can be fit into 770 0 times, resulting in a remainder of 770.
The number 0 becomes the next digit in our result. 
Result so far: 89227.5949367
The remainder is 770 after subtracting 0 from 770.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7700, and continue the process.

The final result is 89227.5949367 with a remainder of 7.7e-07.