354438 ÷ 80 
We're looking to find how many times 80 goes into 354438.

On to step 1:
The number 80 fits into 3 0 times, leaving a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Include the next digit (5) from the dividend after 3, then repeat: 35 / 80

Step 2:
The number 80 fits into 35 0 times, leaving a remainder of 35.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 35, we end up with 35.
Fetch the next digit (4) from the dividend, attach it to 35 and continue: 354 / 80

Advancing to step 3:
80 can be fit into 354 4 times, resulting in a remainder of 34.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we subtract 320 from 354, we get 34.
Append the next digit (4) from the dividend to 34 and continue with: 344 / 80

Let's proceed to step 4:
When dividing 344 by 80, we get 4 with a remainder of 24.
Put 4 as the next digit of the answer. 
Result so far: 44.0
If we take 320 away from 344, we end up with 24.
Include the next digit (3) from the dividend after 24, then repeat: 243 / 80

On to step 5:
If we divide 243 by 80, we get 3 and a remainder of 3.
Write down 3 as next digit of the result. 
Result so far: 443.0
The remainder is 3 after subtracting 240 from 243.
Append the next digit (8) from the dividend to 3 and continue with: 38 / 80

Advancing to step 6:
80 can be fit into 38 0 times, resulting in a remainder of 38.
The next digit of our result is 0. 
Result so far: 4430.0
Subtracting 0 from 38 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 7:
The number 80 fits into 380 4 times, leaving a remainder of 60.
Put 4 as the next digit of the answer. 
Result so far: 4430.4
The remainder is 60 after subtracting 320 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 8:
The number 80 fits into 600 7 times, leaving a remainder of 40.
Write down 7 as next digit of the result. 
Result so far: 4430.47
The remainder is 40 after subtracting 560 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 9:
400 divided by 80 is 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 4430.475
If we take 400 away from 400, 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.

Going ahead to step 10:
80 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 4430.475
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.

Advancing 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: 4430.475
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.

In conclusion, the division gives 4430.475 with a balance of 0.0.