We're dividing 839889 by 86 
We're looking to find how many times 86 goes into 839889.

Advancing to step 1:
If we divide 8 by 86, we get 0 and a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Grab the next digit (3) from the dividend, add it to 8, then carry on: 83 / 86

Advancing to step 2:
When dividing 83 by 86, we get 0 with a remainder of 83.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 83 and we're left with 83.
Grab the next digit (9) from the dividend, add it to 83, then carry on: 839 / 86

On to step 3:
839 divided by 86 is 9 with a remainder of 65.
Write down 9 as next digit of the result. 
Result so far: 9.0
If we take 774 away from 839, we end up with 65.
Take the next digit (8) from the dividend and append it to 65, then repeat: 658 / 86

Let's proceed to step 4:
658 divided by 86 is 7 with a remainder of 56.
Record the quotient 7 as the next digit in the result. 
Result so far: 97.0
Subtracting 602 from 658 leaves us with 56.
Fetch the next digit (8) from the dividend, attach it to 56 and continue: 568 / 86

Moving on to step 5:
The number 86 fits into 568 6 times, leaving a remainder of 52.
The number 6 becomes the next digit in our result. 
Result so far: 976.0
Subtract 516 from 568 to get 52.
Take the next digit (9) from the dividend and append it to 52, then repeat: 529 / 86

Moving on to step 6:
If we divide 529 by 86, we get 6 and a remainder of 13.
Put 6 as the next digit of the answer. 
Result so far: 9766.0
Subtracting 516 from 529 leaves us with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Advancing to step 7:
130 divided by 86 is 1 with a remainder of 44.
Put 1 as the next digit of the answer. 
Result so far: 9766.1
Subtracting 86 from 130 leaves us with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Advancing to step 8:
86 goes into 440 5 times with a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 9766.15
If we take 430 away from 440, we end up 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.

Advancing to step 9:
If we divide 100 by 86, we get 1 and a remainder of 14.
Record the quotient 1 as the next digit in the result. 
Result so far: 9766.151
Subtracting 86 from 100 leaves us 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.

Let's proceed to step 10:
86 goes into 140 1 times with a remainder of 54.
Record the quotient 1 as the next digit in the result. 
Result so far: 9766.1511
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.

Our division results in 9766.1511 with a remaining 0.00054.