86239418 ÷ 787 
We want to divide 86239418 by 787.

On to step 1:
The number 787 fits into 8 0 times, leaving a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Bring next digit (6) of the dividend behind the 8 and repeat the process: 86 / 787

Going ahead to step 2:
787 can be fit into 86 0 times, resulting in a remainder of 86.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 86 to get 86.
Include the next digit (2) from the dividend after 86, then repeat: 862 / 787

Step 3:
787 can be fit into 862 1 times, resulting in a remainder of 75.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 787 from 862 to get 75.
Fetch the next digit (3) from the dividend, attach it to 75 and continue: 753 / 787

On to step 4:
787 can be fit into 753 0 times, resulting in a remainder of 753.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
If we subtract 0 from 753, we get 753.
Take the next digit (9) from the dividend and append it to 753, then repeat: 7539 / 787

Step 5:
787 can be fit into 7539 9 times, resulting in a remainder of 456.
Record the quotient 9 as the next digit in the result. 
Result so far: 109.0
Subtract 7083 from 7539 to get 456.
Take the next digit (4) from the dividend and append it to 456, then repeat: 4564 / 787

Advancing to step 6:
4564 divided by 787 is 5 with a remainder of 629.
Put 5 as the next digit of the answer. 
Result so far: 1095.0
Subtract 3935 from 4564 to get 629.
Include the next digit (1) from the dividend after 629, then repeat: 6291 / 787

Step 7:
If we divide 6291 by 787, we get 7 and a remainder of 782.
Record the quotient 7 as the next digit in the result. 
Result so far: 10957.0
The remainder is 782 after subtracting 5509 from 6291.
Include the next digit (8) from the dividend after 782, then repeat: 7828 / 787

Going ahead to step 8:
If we divide 7828 by 787, we get 9 and a remainder of 745.
Put 9 as the next digit of the answer. 
Result so far: 109579.0
Deduct 7083 from 7828 and we're left with 745.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7450, and continue the process.

Advancing to step 9:
The number 787 fits into 7450 9 times, leaving a remainder of 367.
Record the quotient 9 as the next digit in the result. 
Result so far: 109579.9
If we subtract 7083 from 7450, we get 367.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3670, and continue the process.

On to step 10:
787 goes into 3670 4 times with a remainder of 522.
Write down 4 as next digit of the result. 
Result so far: 109579.94
Subtracting 3148 from 3670 leaves us with 522.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5220, and continue the process.

Advancing to step 11:
If we divide 5220 by 787, we get 6 and a remainder of 498.
Record the quotient 6 as the next digit in the result. 
Result so far: 109579.946
If we take 4722 away from 5220, we end up with 498.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4980, and continue the process.

Advancing to step 12:
787 goes into 4980 6 times with a remainder of 258.
Write down 6 as next digit of the result. 
Result so far: 109579.9466
If we take 4722 away from 4980, we end up with 258.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2580, and continue the process.

After the division, we end up with 109579.9466 and a remainder of 0.00258.