89570215 ÷ 864 
Our goal is to divide 89570215 by 864.

On to step 1:
The number 864 fits into 8 0 times, leaving a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Fetch the next digit (9) from the dividend, attach it to 8 and continue: 89 / 864

Going ahead to step 2:
864 can be fit into 89 0 times, resulting in a remainder of 89.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 89 after subtracting 0 from 89.
Grab the next digit (5) from the dividend, add it to 89, then carry on: 895 / 864

On to step 3:
895 divided by 864 is 1 with a remainder of 31.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 31 after subtracting 864 from 895.
Take the next digit (7) from the dividend and append it to 31, then repeat: 317 / 864

Step 4:
864 can be fit into 317 0 times, resulting in a remainder of 317.
The next digit of our result is 0. 
Result so far: 10.0
If we subtract 0 from 317, we get 317.
Fetch the next digit (0) from the dividend, attach it to 317 and continue: 3170 / 864

Advancing to step 5:
864 goes into 3170 3 times with a remainder of 578.
Use 3 as the next digit of our solution. 
Result so far: 103.0
Subtract 2592 from 3170 to get 578.
Fetch the next digit (2) from the dividend, attach it to 578 and continue: 5782 / 864

Step 6:
5782 divided by 864 is 6 with a remainder of 598.
The next digit of our result is 6. 
Result so far: 1036.0
Subtract 5184 from 5782 to get 598.
Fetch the next digit (1) from the dividend, attach it to 598 and continue: 5981 / 864

On to step 7:
864 can be fit into 5981 6 times, resulting in a remainder of 797.
Put 6 as the next digit of the answer. 
Result so far: 10366.0
Subtracting 5184 from 5981 leaves us with 797.
Fetch the next digit (5) from the dividend, attach it to 797 and continue: 7975 / 864

Step 8:
864 can be fit into 7975 9 times, resulting in a remainder of 199.
Record the quotient 9 as the next digit in the result. 
Result so far: 103669.0
Deduct 7776 from 7975 and we're left with 199.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1990, and continue the process.

Let's proceed to step 9:
864 can be fit into 1990 2 times, resulting in a remainder of 262.
Put 2 as the next digit of the answer. 
Result so far: 103669.2
Subtract 1728 from 1990 to get 262.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2620, and continue the process.

On to step 10:
The number 864 fits into 2620 3 times, leaving a remainder of 28.
Record the quotient 3 as the next digit in the result. 
Result so far: 103669.23
Deduct 2592 from 2620 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 11:
If we divide 280 by 864, we get 0 and a remainder of 280.
Write down 0 as next digit of the result. 
Result so far: 103669.23
The remainder is 280 after subtracting 0 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

On to step 12:
If we divide 2800 by 864, we get 3 and a remainder of 208.
Use 3 as the next digit of our solution. 
Result so far: 103669.2303
If we take 2592 away from 2800, we end up with 208.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

Moving on to step 13:
864 goes into 2080 2 times with a remainder of 352.
Record the quotient 2 as the next digit in the result. 
Result so far: 103669.23032
Deduct 1728 from 2080 and we're left with 352.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

On to step 14:
If we divide 3520 by 864, we get 4 and a remainder of 64.
The next digit of our result is 4. 
Result so far: 103669.230324
Subtracting 3456 from 3520 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Moving on to step 15:
The number 864 fits into 640 0 times, leaving a remainder of 640.
The number 0 becomes the next digit in our result. 
Result so far: 103669.230324
If we take 0 away from 640, we end up with 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Moving on to step 16:
The number 864 fits into 6400 7 times, leaving a remainder of 352.
The next digit of our result is 7. 
Result so far: 103669.23032407
The remainder is 352 after subtracting 6048 from 6400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

Our division results in 103669.23032407 with a remaining 3.52e-07.