We look at the division of 78179220 by 866 
Our goal is to divide 78179220 by 866.

On to step 1:
The number 866 fits into 7 0 times, leaving 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.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 866

Step 2:
When dividing 78 by 866, we get 0 with a remainder of 78.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 78 leaves us with 78.
Fetch the next digit (1) from the dividend, attach it to 78 and continue: 781 / 866

Moving on to step 3:
If we divide 781 by 866, we get 0 and a remainder of 781.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 781 after subtracting 0 from 781.
Grab the next digit (7) from the dividend, add it to 781, then carry on: 7817 / 866

Step 4:
866 goes into 7817 9 times with a remainder of 23.
Write down 9 as next digit of the result. 
Result so far: 9.0
Deduct 7794 from 7817 and we're left with 23.
Append the next digit (9) from the dividend to 23 and continue with: 239 / 866

Moving on to step 5:
866 goes into 239 0 times with a remainder of 239.
Use 0 as the next digit of our solution. 
Result so far: 90.0
Subtract 0 from 239 to get 239.
Take the next digit (2) from the dividend and append it to 239, then repeat: 2392 / 866

Moving on to step 6:
When dividing 2392 by 866, we get 2 with a remainder of 660.
Put 2 as the next digit of the answer. 
Result so far: 902.0
Deduct 1732 from 2392 and we're left with 660.
Fetch the next digit (2) from the dividend, attach it to 660 and continue: 6602 / 866

Let's proceed to step 7:
When dividing 6602 by 866, we get 7 with a remainder of 540.
Put 7 as the next digit of the answer. 
Result so far: 9027.0
Subtracting 6062 from 6602 leaves us with 540.
Grab the next digit (0) from the dividend, add it to 540, then carry on: 5400 / 866

Let's proceed to step 8:
When dividing 5400 by 866, we get 6 with a remainder of 204.
Write down 6 as next digit of the result. 
Result so far: 90276.0
Deduct 5196 from 5400 and we're left with 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

Advancing to step 9:
866 can be fit into 2040 2 times, resulting in a remainder of 308.
Write down 2 as next digit of the result. 
Result so far: 90276.2
Subtract 1732 from 2040 to get 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

Moving on to step 10:
The number 866 fits into 3080 3 times, leaving a remainder of 482.
The next digit of our result is 3. 
Result so far: 90276.23
Subtract 2598 from 3080 to get 482.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4820, and continue the process.

Let's proceed to step 11:
If we divide 4820 by 866, we get 5 and a remainder of 490.
Record the quotient 5 as the next digit in the result. 
Result so far: 90276.235
If we take 4330 away from 4820, we end up with 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4900, and continue the process.

Let's proceed to step 12:
4900 divided by 866 is 5 with a remainder of 570.
Write down 5 as next digit of the result. 
Result so far: 90276.2355
Subtract 4330 from 4900 to get 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5700, and continue the process.

After the division, we end up with 90276.2355 and a remainder of 0.0057.