64879599 ÷ 85 
Our goal is to divide 64879599 by 85.

Step 1:
If we divide 6 by 85, we get 0 and a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 85

Moving on to step 2:
If we divide 64 by 85, we get 0 and a remainder of 64.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 64 to get 64.
Include the next digit (8) from the dividend after 64, then repeat: 648 / 85

Let's proceed to step 3:
648 divided by 85 is 7 with a remainder of 53.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we subtract 595 from 648, we get 53.
Fetch the next digit (7) from the dividend, attach it to 53 and continue: 537 / 85

Going ahead to step 4:
85 goes into 537 6 times with a remainder of 27.
Put 6 as the next digit of the answer. 
Result so far: 76.0
Subtracting 510 from 537 leaves us with 27.
Grab the next digit (9) from the dividend, add it to 27, then carry on: 279 / 85

Going ahead to step 5:
85 can be fit into 279 3 times, resulting in a remainder of 24.
Use 3 as the next digit of our solution. 
Result so far: 763.0
If we take 255 away from 279, we end up with 24.
Grab the next digit (5) from the dividend, add it to 24, then carry on: 245 / 85

Going ahead to step 6:
85 can be fit into 245 2 times, resulting in a remainder of 75.
Write down 2 as next digit of the result. 
Result so far: 7632.0
Subtracting 170 from 245 leaves us with 75.
Bring next digit (9) of the dividend behind the 75 and repeat the process: 759 / 85

Let's proceed to step 7:
85 can be fit into 759 8 times, resulting in a remainder of 79.
Use 8 as the next digit of our solution. 
Result so far: 76328.0
The remainder is 79 after subtracting 680 from 759.
Append the next digit (9) from the dividend to 79 and continue with: 799 / 85

Let's proceed to step 8:
When dividing 799 by 85, we get 9 with a remainder of 34.
The next digit of our result is 9. 
Result so far: 763289.0
The remainder is 34 after subtracting 765 from 799.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 9:
The number 85 fits into 340 4 times, leaving a remainder of 0.
Record the quotient 4 as the next digit in the result. 
Result so far: 763289.4
Deduct 340 from 340 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 10:
0 divided by 85 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 763289.4
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 11:
85 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 763289.4
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 763289.4, with a leftover of 0.0.