77987126 ÷ 687 
Our goal is to divide 77987126 by 687.

On to step 1:
When dividing 7 by 687, we get 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Take the next digit (7) from the dividend and append it to 7, then repeat: 77 / 687

On to step 2:
When dividing 77 by 687, we get 0 with a remainder of 77.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 77, we get 77.
Bring next digit (9) of the dividend behind the 77 and repeat the process: 779 / 687

Advancing to step 3:
When dividing 779 by 687, we get 1 with a remainder of 92.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 92 after subtracting 687 from 779.
Bring next digit (8) of the dividend behind the 92 and repeat the process: 928 / 687

Moving on to step 4:
When dividing 928 by 687, we get 1 with a remainder of 241.
Use 1 as the next digit of our solution. 
Result so far: 11.0
If we take 687 away from 928, we end up with 241.
Include the next digit (7) from the dividend after 241, then repeat: 2417 / 687

Moving on to step 5:
When dividing 2417 by 687, we get 3 with a remainder of 356.
The next digit of our result is 3. 
Result so far: 113.0
If we subtract 2061 from 2417, we get 356.
Grab the next digit (1) from the dividend, add it to 356, then carry on: 3561 / 687

Advancing to step 6:
687 goes into 3561 5 times with a remainder of 126.
Record the quotient 5 as the next digit in the result. 
Result so far: 1135.0
If we take 3435 away from 3561, we end up with 126.
Grab the next digit (2) from the dividend, add it to 126, then carry on: 1262 / 687

Let's proceed to step 7:
687 can be fit into 1262 1 times, resulting in a remainder of 575.
Use 1 as the next digit of our solution. 
Result so far: 11351.0
Subtracting 687 from 1262 leaves us with 575.
Include the next digit (6) from the dividend after 575, then repeat: 5756 / 687

On to step 8:
When dividing 5756 by 687, we get 8 with a remainder of 260.
Put 8 as the next digit of the answer. 
Result so far: 113518.0
If we subtract 5496 from 5756, we get 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

On to step 9:
687 can be fit into 2600 3 times, resulting in a remainder of 539.
The number 3 becomes the next digit in our result. 
Result so far: 113518.3
Subtract 2061 from 2600 to get 539.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5390, and continue the process.

Let's proceed to step 10:
The number 687 fits into 5390 7 times, leaving a remainder of 581.
The number 7 becomes the next digit in our result. 
Result so far: 113518.37
The remainder is 581 after subtracting 4809 from 5390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5810, and continue the process.

On to step 11:
687 can be fit into 5810 8 times, resulting in a remainder of 314.
Put 8 as the next digit of the answer. 
Result so far: 113518.378
Deduct 5496 from 5810 and we're left with 314.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3140, and continue the process.

On to step 12:
When dividing 3140 by 687, we get 4 with a remainder of 392.
The number 4 becomes the next digit in our result. 
Result so far: 113518.3784
Subtract 2748 from 3140 to get 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Advancing to step 13:
687 goes into 3920 5 times with a remainder of 485.
Record the quotient 5 as the next digit in the result. 
Result so far: 113518.37845
Deduct 3435 from 3920 and we're left with 485.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4850, and continue the process.

Advancing to step 14:
When dividing 4850 by 687, we get 7 with a remainder of 41.
Write down 7 as next digit of the result. 
Result so far: 113518.378457
If we take 4809 away from 4850, we end up with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Advancing to step 15:
The number 687 fits into 410 0 times, leaving a remainder of 410.
Write down 0 as next digit of the result. 
Result so far: 113518.378457
Deduct 0 from 410 and we're left with 410.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4100, and continue the process.

Going ahead to step 16:
When dividing 4100 by 687, we get 5 with a remainder of 665.
Write down 5 as next digit of the result. 
Result so far: 113518.37845705
If we take 3435 away from 4100, we end up with 665.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6650, and continue the process.

The quotient of the division is 113518.37845705, and the remainder is 6.65e-07.