339340 divided by 8 
Our goal is to divide 339340 by 8.

Moving on to step 1:
3 divided by 8 is 0 with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Include the next digit (3) from the dividend after 3, then repeat: 33 / 8

Going ahead to step 2:
The number 8 fits into 33 4 times, leaving a remainder of 1.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtracting 32 from 33 leaves us with 1.
Include the next digit (9) from the dividend after 1, then repeat: 19 / 8

On to step 3:
8 can be fit into 19 2 times, resulting in a remainder of 3.
Record the quotient 2 as the next digit in the result. 
Result so far: 42.0
The remainder is 3 after subtracting 16 from 19.
Grab the next digit (3) from the dividend, add it to 3, then carry on: 33 / 8

Step 4:
33 divided by 8 is 4 with a remainder of 1.
Record the quotient 4 as the next digit in the result. 
Result so far: 424.0
Deduct 32 from 33 and we're left with 1.
Append the next digit (4) from the dividend to 1 and continue with: 14 / 8

Step 5:
8 can be fit into 14 1 times, resulting in a remainder of 6.
The number 1 becomes the next digit in our result. 
Result so far: 4241.0
Subtract 8 from 14 to get 6.
Fetch the next digit (0) from the dividend, attach it to 6 and continue: 60 / 8

On to step 6:
If we divide 60 by 8, we get 7 and a remainder of 4.
Write down 7 as next digit of the result. 
Result so far: 42417.0
If we take 56 away from 60, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 7:
If we divide 40 by 8, we get 5 and a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 42417.5
If we take 40 away from 40, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 8:
0 divided by 8 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 42417.5
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 9:
8 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 42417.5
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 42417.5, with a leftover of 0.0.