We're dividing 86840643 by 339 
We're looking to find how many times 339 goes into 86840643.

Going ahead to step 1:
8 divided by 339 is 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 339

Going ahead to step 2:
86 divided by 339 is 0 with a remainder of 86.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 86 and we're left with 86.
Take the next digit (8) from the dividend and append it to 86, then repeat: 868 / 339

Advancing to step 3:
868 divided by 339 is 2 with a remainder of 190.
The next digit of our result is 2. 
Result so far: 2.0
Subtracting 678 from 868 leaves us with 190.
Include the next digit (4) from the dividend after 190, then repeat: 1904 / 339

Advancing to step 4:
When dividing 1904 by 339, we get 5 with a remainder of 209.
Write down 5 as next digit of the result. 
Result so far: 25.0
If we subtract 1695 from 1904, we get 209.
Bring next digit (0) of the dividend behind the 209 and repeat the process: 2090 / 339

Moving on to step 5:
When dividing 2090 by 339, we get 6 with a remainder of 56.
Record the quotient 6 as the next digit in the result. 
Result so far: 256.0
If we subtract 2034 from 2090, we get 56.
Append the next digit (6) from the dividend to 56 and continue with: 566 / 339

Moving on to step 6:
The number 339 fits into 566 1 times, leaving a remainder of 227.
Record the quotient 1 as the next digit in the result. 
Result so far: 2561.0
Subtract 339 from 566 to get 227.
Append the next digit (4) from the dividend to 227 and continue with: 2274 / 339

Let's proceed to step 7:
The number 339 fits into 2274 6 times, leaving a remainder of 240.
Put 6 as the next digit of the answer. 
Result so far: 25616.0
Deduct 2034 from 2274 and we're left with 240.
Grab the next digit (3) from the dividend, add it to 240, then carry on: 2403 / 339

On to step 8:
The number 339 fits into 2403 7 times, leaving a remainder of 30.
Put 7 as the next digit of the answer. 
Result so far: 256167.0
Deduct 2373 from 2403 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 9:
339 goes into 300 0 times with a remainder of 300.
The next digit of our result is 0. 
Result so far: 256167.0
Subtracting 0 from 300 leaves us with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Let's proceed to step 10:
339 can be fit into 3000 8 times, resulting in a remainder of 288.
The number 8 becomes the next digit in our result. 
Result so far: 256167.08
Subtract 2712 from 3000 to get 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Step 11:
The number 339 fits into 2880 8 times, leaving a remainder of 168.
The number 8 becomes the next digit in our result. 
Result so far: 256167.088
If we subtract 2712 from 2880, we get 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

The final result is 256167.088 with a remainder of 0.0168.