Let's divide 343688 by 8
Our goal is to divide 343688 by 8.

Going ahead to step 1:
The number 8 fits into 3 0 times, leaving a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Include the next digit (4) from the dividend after 3, then repeat: 34 / 8

Step 2:
34 divided by 8 is 4 with a remainder of 2.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Deduct 32 from 34 and we're left with 2.
Include the next digit (3) from the dividend after 2, then repeat: 23 / 8

Advancing to step 3:
23 divided by 8 is 2 with a remainder of 7.
Write down 2 as next digit of the result. 
Result so far: 42.0
If we subtract 16 from 23, we get 7.
Fetch the next digit (6) from the dividend, attach it to 7 and continue: 76 / 8

Let's proceed to step 4:
76 divided by 8 is 9 with a remainder of 4.
Record the quotient 9 as the next digit in the result. 
Result so far: 429.0
The remainder is 4 after subtracting 72 from 76.
Fetch the next digit (8) from the dividend, attach it to 4 and continue: 48 / 8

Advancing to step 5:
8 can be fit into 48 6 times, resulting in a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 4296.0
Subtract 48 from 48 to get 0.
Bring next digit (8) of the dividend behind the 0 and repeat the process: 8 / 8

Advancing to step 6:
8 divided by 8 is 1 with a remainder of 0.
The next digit of our result is 1. 
Result so far: 42961.0
Subtract 8 from 8 to get 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 7:
When dividing 0 by 8, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 42961.0
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 8:
8 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 42961.0
If we take 0 away from 0, 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.

The final outcome is 42961.0, with a leftover of 0.0.