We look at the division of 435309 by 80 
Our goal is to divide 435309 by 80.

Going ahead to step 1:
80 can be fit into 4 0 times, resulting in a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Fetch the next digit (3) from the dividend, attach it to 4 and continue: 43 / 80

Step 2:
43 divided by 80 is 0 with a remainder of 43.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 43 leaves us with 43.
Grab the next digit (5) from the dividend, add it to 43, then carry on: 435 / 80

Step 3:
If we divide 435 by 80, we get 5 and a remainder of 35.
Write down 5 as next digit of the result. 
Result so far: 5.0
Subtract 400 from 435 to get 35.
Bring next digit (3) of the dividend behind the 35 and repeat the process: 353 / 80

Moving on to step 4:
If we divide 353 by 80, we get 4 and a remainder of 33.
The next digit of our result is 4. 
Result so far: 54.0
Subtract 320 from 353 to get 33.
Append the next digit (0) from the dividend to 33 and continue with: 330 / 80

On to step 5:
If we divide 330 by 80, we get 4 and a remainder of 10.
Write down 4 as next digit of the result. 
Result so far: 544.0
Deduct 320 from 330 and we're left with 10.
Grab the next digit (9) from the dividend, add it to 10, then carry on: 109 / 80

On to step 6:
When dividing 109 by 80, we get 1 with a remainder of 29.
Use 1 as the next digit of our solution. 
Result so far: 5441.0
Subtract 80 from 109 to get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Moving on to step 7:
When dividing 290 by 80, we get 3 with a remainder of 50.
Record the quotient 3 as the next digit in the result. 
Result so far: 5441.3
The remainder is 50 after subtracting 240 from 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 8:
80 can be fit into 500 6 times, resulting in a remainder of 20.
The next digit of our result is 6. 
Result so far: 5441.36
If we take 480 away from 500, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 9:
When dividing 200 by 80, we get 2 with a remainder of 40.
Put 2 as the next digit of the answer. 
Result so far: 5441.362
The remainder is 40 after subtracting 160 from 200.
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:
400 divided by 80 is 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 5441.3625
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.

Step 11:
The number 80 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 5441.3625
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.

Step 12:
If we divide 0 by 80, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 5441.3625
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.

The final outcome is 5441.3625, with a leftover of 0.0.