Let's divide 86690 by 879
We want to figure out the number of times 86690 can be divided by 879.

On to step 1:
879 goes into 8 0 times with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 879

Step 2:
If we divide 86 by 879, we get 0 and a remainder of 86.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 86 leaves us with 86.
Append the next digit (6) from the dividend to 86 and continue with: 866 / 879

Moving on to step 3:
866 divided by 879 is 0 with a remainder of 866.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 866, we get 866.
Append the next digit (9) from the dividend to 866 and continue with: 8669 / 879

Moving on to step 4:
If we divide 8669 by 879, we get 9 and a remainder of 758.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
The remainder is 758 after subtracting 7911 from 8669.
Include the next digit (0) from the dividend after 758, then repeat: 7580 / 879

Advancing to step 5:
879 can be fit into 7580 8 times, resulting in a remainder of 548.
Record the quotient 8 as the next digit in the result. 
Result so far: 98.0
If we subtract 7032 from 7580, we get 548.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5480, and continue the process.

Going ahead to step 6:
879 goes into 5480 6 times with a remainder of 206.
Put 6 as the next digit of the answer. 
Result so far: 98.6
If we subtract 5274 from 5480, we get 206.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2060, and continue the process.

Going ahead to step 7:
If we divide 2060 by 879, we get 2 and a remainder of 302.
The number 2 becomes the next digit in our result. 
Result so far: 98.62
Subtracting 1758 from 2060 leaves us with 302.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3020, and continue the process.

Let's proceed to step 8:
The number 879 fits into 3020 3 times, leaving a remainder of 383.
Use 3 as the next digit of our solution. 
Result so far: 98.623
The remainder is 383 after subtracting 2637 from 3020.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3830, and continue the process.

Step 9:
3830 divided by 879 is 4 with a remainder of 314.
The number 4 becomes the next digit in our result. 
Result so far: 98.6234
Subtracting 3516 from 3830 leaves us 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.

Let's proceed to step 10:
When dividing 3140 by 879, we get 3 with a remainder of 503.
Write down 3 as next digit of the result. 
Result so far: 98.62343
Deduct 2637 from 3140 and we're left with 503.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5030, and continue the process.

Step 11:
5030 divided by 879 is 5 with a remainder of 635.
The number 5 becomes the next digit in our result. 
Result so far: 98.623435
If we take 4395 away from 5030, we end up with 635.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6350, and continue the process.

Step 12:
When dividing 6350 by 879, we get 7 with a remainder of 197.
Put 7 as the next digit of the answer. 
Result so far: 98.6234357
The remainder is 197 after subtracting 6153 from 6350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1970, and continue the process.

Let's proceed to step 13:
If we divide 1970 by 879, we get 2 and a remainder of 212.
The number 2 becomes the next digit in our result. 
Result so far: 98.62343572
The remainder is 212 after subtracting 1758 from 1970.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

In conclusion, the division gives 98.62343572 with a balance of 2.12e-07.