We look at the division of 343569 by 80 
We're looking to find how many times 80 goes into 343569.

Let's proceed to step 1:
If we divide 3 by 80, we get 0 and a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Fetch the next digit (4) from the dividend, attach it to 3 and continue: 34 / 80

On to step 2:
80 can be fit into 34 0 times, resulting in a remainder of 34.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 34 to get 34.
Bring next digit (3) of the dividend behind the 34 and repeat the process: 343 / 80

Step 3:
80 can be fit into 343 4 times, resulting in a remainder of 23.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we subtract 320 from 343, we get 23.
Bring next digit (5) of the dividend behind the 23 and repeat the process: 235 / 80

Let's proceed to step 4:
The number 80 fits into 235 2 times, leaving a remainder of 75.
The next digit of our result is 2. 
Result so far: 42.0
The remainder is 75 after subtracting 160 from 235.
Bring next digit (6) of the dividend behind the 75 and repeat the process: 756 / 80

Let's proceed to step 5:
80 goes into 756 9 times with a remainder of 36.
The number 9 becomes the next digit in our result. 
Result so far: 429.0
Deduct 720 from 756 and we're left with 36.
Take the next digit (9) from the dividend and append it to 36, then repeat: 369 / 80

Advancing to step 6:
80 goes into 369 4 times with a remainder of 49.
Put 4 as the next digit of the answer. 
Result so far: 4294.0
Deduct 320 from 369 and we're left with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Let's proceed to step 7:
490 divided by 80 is 6 with a remainder of 10.
Put 6 as the next digit of the answer. 
Result so far: 4294.6
If we subtract 480 from 490, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 8:
If we divide 100 by 80, we get 1 and a remainder of 20.
The next digit of our result is 1. 
Result so far: 4294.61
If we subtract 80 from 100, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 9:
80 can be fit into 200 2 times, resulting in a remainder of 40.
The number 2 becomes the next digit in our result. 
Result so far: 4294.612
Subtract 160 from 200 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 10:
The number 80 fits into 400 5 times, leaving a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 4294.6125
If we subtract 400 from 400, we 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.

On to step 11:
80 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 4294.6125
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.

Moving on to step 12:
80 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: 4294.6125
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 4294.6125, with a leftover of 0.0.