879028 divided by 86 
Our goal is to divide 879028 by 86.

On to step 1:
86 goes into 8 0 times with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Append the next digit (7) from the dividend to 8 and continue with: 87 / 86

On to step 2:
When dividing 87 by 86, we get 1 with a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 86 from 87 and we're left with 1.
Fetch the next digit (9) from the dividend, attach it to 1 and continue: 19 / 86

On to step 3:
The number 86 fits into 19 0 times, leaving a remainder of 19.
The next digit of our result is 0. 
Result so far: 10.0
If we take 0 away from 19, we end up with 19.
Fetch the next digit (0) from the dividend, attach it to 19 and continue: 190 / 86

Moving on to step 4:
86 goes into 190 2 times with a remainder of 18.
The number 2 becomes the next digit in our result. 
Result so far: 102.0
Deduct 172 from 190 and we're left with 18.
Bring next digit (2) of the dividend behind the 18 and repeat the process: 182 / 86

Moving on to step 5:
86 goes into 182 2 times with a remainder of 10.
Write down 2 as next digit of the result. 
Result so far: 1022.0
Deduct 172 from 182 and we're left with 10.
Take the next digit (8) from the dividend and append it to 10, then repeat: 108 / 86

Moving on to step 6:
86 goes into 108 1 times with a remainder of 22.
Record the quotient 1 as the next digit in the result. 
Result so far: 10221.0
Deduct 86 from 108 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 7:
The number 86 fits into 220 2 times, leaving a remainder of 48.
Put 2 as the next digit of the answer. 
Result so far: 10221.2
If we take 172 away from 220, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 8:
When dividing 480 by 86, we get 5 with a remainder of 50.
Put 5 as the next digit of the answer. 
Result so far: 10221.25
The remainder is 50 after subtracting 430 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 9:
When dividing 500 by 86, we get 5 with a remainder of 70.
Record the quotient 5 as the next digit in the result. 
Result so far: 10221.255
Subtract 430 from 500 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

After the division, we end up with 10221.255 and a remainder of 0.007.