We're dividing 77821 by 91 
Let's see how many times 91 fits into 77821.

Going ahead to step 1:
91 can be fit into 7 0 times, resulting in a remainder of 7.
The next digit of our result is 0. 
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 / 91

Let's proceed to step 2:
91 can be fit into 77 0 times, resulting in a remainder of 77.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 77 and we're left with 77.
Append the next digit (8) from the dividend to 77 and continue with: 778 / 91

Going ahead to step 3:
778 divided by 91 is 8 with a remainder of 50.
Use 8 as the next digit of our solution. 
Result so far: 8.0
If we take 728 away from 778, we end up with 50.
Append the next digit (2) from the dividend to 50 and continue with: 502 / 91

Moving on to step 4:
When dividing 502 by 91, we get 5 with a remainder of 47.
Record the quotient 5 as the next digit in the result. 
Result so far: 85.0
Subtract 455 from 502 to get 47.
Grab the next digit (1) from the dividend, add it to 47, then carry on: 471 / 91

Advancing to step 5:
The number 91 fits into 471 5 times, leaving a remainder of 16.
The next digit of our result is 5. 
Result so far: 855.0
If we take 455 away from 471, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 6:
91 goes into 160 1 times with a remainder of 69.
Record the quotient 1 as the next digit in the result. 
Result so far: 855.1
Subtracting 91 from 160 leaves us with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Moving on to step 7:
The number 91 fits into 690 7 times, leaving a remainder of 53.
Put 7 as the next digit of the answer. 
Result so far: 855.17
Subtracting 637 from 690 leaves us with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Going ahead to step 8:
The number 91 fits into 530 5 times, leaving a remainder of 75.
The number 5 becomes the next digit in our result. 
Result so far: 855.175
Subtracting 455 from 530 leaves us with 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 9:
750 divided by 91 is 8 with a remainder of 22.
Record the quotient 8 as the next digit in the result. 
Result so far: 855.1758
If we take 728 away from 750, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Step 10:
91 goes into 220 2 times with a remainder of 38.
Use 2 as the next digit of our solution. 
Result so far: 855.17582
If we subtract 182 from 220, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 11:
If we divide 380 by 91, we get 4 and a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 855.175824
Deduct 364 from 380 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 12:
91 goes into 160 1 times with a remainder of 69.
Put 1 as the next digit of the answer. 
Result so far: 855.1758241
If we take 91 away from 160, we end up with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Moving on to step 13:
91 can be fit into 690 7 times, resulting in a remainder of 53.
Record the quotient 7 as the next digit in the result. 
Result so far: 855.17582417
Deduct 637 from 690 and we're left with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

After the division, we end up with 855.17582417 and a remainder of 5.3e-08.