77781091 ÷ 964 
Our goal is to divide 77781091 by 964.

Moving on to step 1:
When dividing 7 by 964, we get 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Include the next digit (7) from the dividend after 7, then repeat: 77 / 964

Going ahead to step 2:
The number 964 fits into 77 0 times, leaving a remainder of 77.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 77 to get 77.
Take the next digit (7) from the dividend and append it to 77, then repeat: 777 / 964

Let's proceed to step 3:
777 divided by 964 is 0 with a remainder of 777.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 777 after subtracting 0 from 777.
Take the next digit (8) from the dividend and append it to 777, then repeat: 7778 / 964

Step 4:
If we divide 7778 by 964, we get 8 and a remainder of 66.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
The remainder is 66 after subtracting 7712 from 7778.
Take the next digit (1) from the dividend and append it to 66, then repeat: 661 / 964

Advancing to step 5:
When dividing 661 by 964, we get 0 with a remainder of 661.
The next digit of our result is 0. 
Result so far: 80.0
Subtract 0 from 661 to get 661.
Bring next digit (0) of the dividend behind the 661 and repeat the process: 6610 / 964

Let's proceed to step 6:
964 can be fit into 6610 6 times, resulting in a remainder of 826.
Use 6 as the next digit of our solution. 
Result so far: 806.0
If we subtract 5784 from 6610, we get 826.
Grab the next digit (9) from the dividend, add it to 826, then carry on: 8269 / 964

Going ahead to step 7:
964 can be fit into 8269 8 times, resulting in a remainder of 557.
The next digit of our result is 8. 
Result so far: 8068.0
The remainder is 557 after subtracting 7712 from 8269.
Append the next digit (1) from the dividend to 557 and continue with: 5571 / 964

On to step 8:
When dividing 5571 by 964, we get 5 with a remainder of 751.
The number 5 becomes the next digit in our result. 
Result so far: 80685.0
Deduct 4820 from 5571 and we're left with 751.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7510, and continue the process.

Going ahead to step 9:
964 can be fit into 7510 7 times, resulting in a remainder of 762.
Put 7 as the next digit of the answer. 
Result so far: 80685.7
The remainder is 762 after subtracting 6748 from 7510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7620, and continue the process.

Step 10:
The number 964 fits into 7620 7 times, leaving a remainder of 872.
Write down 7 as next digit of the result. 
Result so far: 80685.77
If we take 6748 away from 7620, we end up with 872.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8720, and continue the process.

The quotient of the division is 80685.77, and the remainder is 0.872.