85664913 ÷ 77 
We want to divide 85664913 by 77.

Advancing to step 1:
If we divide 8 by 77, we get 0 and a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Include the next digit (5) from the dividend after 8, then repeat: 85 / 77

Let's proceed to step 2:
If we divide 85 by 77, we get 1 and a remainder of 8.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 77 away from 85, we end up with 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 77

Step 3:
When dividing 86 by 77, we get 1 with a remainder of 9.
Write down 1 as next digit of the result. 
Result so far: 11.0
If we take 77 away from 86, we end up with 9.
Grab the next digit (6) from the dividend, add it to 9, then carry on: 96 / 77

Advancing to step 4:
96 divided by 77 is 1 with a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 111.0
Deduct 77 from 96 and we're left with 19.
Include the next digit (4) from the dividend after 19, then repeat: 194 / 77

Let's proceed to step 5:
77 goes into 194 2 times with a remainder of 40.
Use 2 as the next digit of our solution. 
Result so far: 1112.0
Subtracting 154 from 194 leaves us with 40.
Include the next digit (9) from the dividend after 40, then repeat: 409 / 77

On to step 6:
77 goes into 409 5 times with a remainder of 24.
The next digit of our result is 5. 
Result so far: 11125.0
If we subtract 385 from 409, we get 24.
Take the next digit (1) from the dividend and append it to 24, then repeat: 241 / 77

Moving on to step 7:
When dividing 241 by 77, we get 3 with a remainder of 10.
Use 3 as the next digit of our solution. 
Result so far: 111253.0
Subtract 231 from 241 to get 10.
Take the next digit (3) from the dividend and append it to 10, then repeat: 103 / 77

Moving on to step 8:
77 goes into 103 1 times with a remainder of 26.
Put 1 as the next digit of the answer. 
Result so far: 1112531.0
If we subtract 77 from 103, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Advancing to step 9:
260 divided by 77 is 3 with a remainder of 29.
Use 3 as the next digit of our solution. 
Result so far: 1112531.3
Deduct 231 from 260 and we're left with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Step 10:
290 divided by 77 is 3 with a remainder of 59.
The number 3 becomes the next digit in our result. 
Result so far: 1112531.33
If we take 231 away from 290, we end up with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

After the division, we end up with 1112531.33 and a remainder of 0.059.