We look at the division of 77926031 by 861 
Our goal is to divide 77926031 by 861.

On to step 1:
7 divided by 861 is 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Take the next digit (7) from the dividend and append it to 7, then repeat: 77 / 861

Advancing to step 2:
861 goes into 77 0 times with a remainder of 77.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 77, we get 77.
Grab the next digit (9) from the dividend, add it to 77, then carry on: 779 / 861

On to step 3:
861 goes into 779 0 times with a remainder of 779.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 779 and we're left with 779.
Take the next digit (2) from the dividend and append it to 779, then repeat: 7792 / 861

Step 4:
861 can be fit into 7792 9 times, resulting in a remainder of 43.
Put 9 as the next digit of the answer. 
Result so far: 9.0
The remainder is 43 after subtracting 7749 from 7792.
Include the next digit (6) from the dividend after 43, then repeat: 436 / 861

Step 5:
436 divided by 861 is 0 with a remainder of 436.
Write down 0 as next digit of the result. 
Result so far: 90.0
The remainder is 436 after subtracting 0 from 436.
Append the next digit (0) from the dividend to 436 and continue with: 4360 / 861

Advancing to step 6:
861 goes into 4360 5 times with a remainder of 55.
Record the quotient 5 as the next digit in the result. 
Result so far: 905.0
Subtract 4305 from 4360 to get 55.
Fetch the next digit (3) from the dividend, attach it to 55 and continue: 553 / 861

On to step 7:
The number 861 fits into 553 0 times, leaving a remainder of 553.
Put 0 as the next digit of the answer. 
Result so far: 9050.0
The remainder is 553 after subtracting 0 from 553.
Grab the next digit (1) from the dividend, add it to 553, then carry on: 5531 / 861

On to step 8:
The number 861 fits into 5531 6 times, leaving a remainder of 365.
Use 6 as the next digit of our solution. 
Result so far: 90506.0
Deduct 5166 from 5531 and we're left with 365.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3650, and continue the process.

Advancing to step 9:
3650 divided by 861 is 4 with a remainder of 206.
Write down 4 as next digit of the result. 
Result so far: 90506.4
The remainder is 206 after subtracting 3444 from 3650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2060, and continue the process.

Step 10:
2060 divided by 861 is 2 with a remainder of 338.
Use 2 as the next digit of our solution. 
Result so far: 90506.42
The remainder is 338 after subtracting 1722 from 2060.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3380, and continue the process.

Moving on to step 11:
If we divide 3380 by 861, we get 3 and a remainder of 797.
Write down 3 as next digit of the result. 
Result so far: 90506.423
Deduct 2583 from 3380 and we're left with 797.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7970, and continue the process.

On to step 12:
861 goes into 7970 9 times with a remainder of 221.
The next digit of our result is 9. 
Result so far: 90506.4239
If we take 7749 away from 7970, we end up with 221.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2210, and continue the process.

Let's proceed to step 13:
The number 861 fits into 2210 2 times, leaving a remainder of 488.
Put 2 as the next digit of the answer. 
Result so far: 90506.42392
If we subtract 1722 from 2210, we get 488.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4880, and continue the process.

Moving on to step 14:
The number 861 fits into 4880 5 times, leaving a remainder of 575.
The number 5 becomes the next digit in our result. 
Result so far: 90506.423925
Subtract 4305 from 4880 to get 575.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5750, and continue the process.

Advancing to step 15:
5750 divided by 861 is 6 with a remainder of 584.
The next digit of our result is 6. 
Result so far: 90506.4239256
Subtracting 5166 from 5750 leaves us with 584.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5840, and continue the process.

On to step 16:
If we divide 5840 by 861, we get 6 and a remainder of 674.
The number 6 becomes the next digit in our result. 
Result so far: 90506.42392566
Subtracting 5166 from 5840 leaves us with 674.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6740, and continue the process.

After the division, we end up with 90506.42392566 and a remainder of 6.74e-07.