Let's divide 598991 by 86
We're looking to find how many times 86 goes into 598991.

Going ahead to step 1:
The number 86 fits into 5 0 times, leaving a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Append the next digit (9) from the dividend to 5 and continue with: 59 / 86

On to step 2:
When dividing 59 by 86, we get 0 with a remainder of 59.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 59 after subtracting 0 from 59.
Fetch the next digit (8) from the dividend, attach it to 59 and continue: 598 / 86

Step 3:
The number 86 fits into 598 6 times, leaving a remainder of 82.
The next digit of our result is 6. 
Result so far: 6.0
Subtract 516 from 598 to get 82.
Append the next digit (9) from the dividend to 82 and continue with: 829 / 86

On to step 4:
829 divided by 86 is 9 with a remainder of 55.
Record the quotient 9 as the next digit in the result. 
Result so far: 69.0
Subtract 774 from 829 to get 55.
Append the next digit (9) from the dividend to 55 and continue with: 559 / 86

Advancing to step 5:
The number 86 fits into 559 6 times, leaving a remainder of 43.
The number 6 becomes the next digit in our result. 
Result so far: 696.0
If we subtract 516 from 559, we get 43.
Take the next digit (1) from the dividend and append it to 43, then repeat: 431 / 86

Going ahead to step 6:
If we divide 431 by 86, we get 5 and a remainder of 1.
The number 5 becomes the next digit in our result. 
Result so far: 6965.0
If we take 430 away from 431, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 7:
When dividing 10 by 86, we get 0 with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 6965.0
Deduct 0 from 10 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 8:
86 goes into 100 1 times with a remainder of 14.
Use 1 as the next digit of our solution. 
Result so far: 6965.01
Deduct 86 from 100 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 9:
When dividing 140 by 86, we get 1 with a remainder of 54.
The number 1 becomes the next digit in our result. 
Result so far: 6965.011
If we subtract 86 from 140, we get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

After the division, we end up with 6965.011 and a remainder of 0.0054.