We divide 345553 by 80
Our goal is to divide 345553 by 80.

Step 1:
80 can be fit into 3 0 times, resulting in a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Append the next digit (4) from the dividend to 3 and continue with: 34 / 80

Moving on to step 2:
If we divide 34 by 80, we get 0 and a remainder of 34.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 34 and we're left with 34.
Bring next digit (5) of the dividend behind the 34 and repeat the process: 345 / 80

Going ahead to step 3:
80 goes into 345 4 times with a remainder of 25.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtracting 320 from 345 leaves us with 25.
Take the next digit (5) from the dividend and append it to 25, then repeat: 255 / 80

Moving on to step 4:
80 can be fit into 255 3 times, resulting in a remainder of 15.
The number 3 becomes the next digit in our result. 
Result so far: 43.0
The remainder is 15 after subtracting 240 from 255.
Take the next digit (5) from the dividend and append it to 15, then repeat: 155 / 80

On to step 5:
When dividing 155 by 80, we get 1 with a remainder of 75.
Use 1 as the next digit of our solution. 
Result so far: 431.0
If we take 80 away from 155, we end up with 75.
Take the next digit (3) from the dividend and append it to 75, then repeat: 753 / 80

Advancing to step 6:
80 goes into 753 9 times with a remainder of 33.
Record the quotient 9 as the next digit in the result. 
Result so far: 4319.0
Subtract 720 from 753 to get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Let's proceed to step 7:
The number 80 fits into 330 4 times, leaving a remainder of 10.
Put 4 as the next digit of the answer. 
Result so far: 4319.4
If we take 320 away from 330, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 8:
The number 80 fits into 100 1 times, leaving a remainder of 20.
Use 1 as the next digit of our solution. 
Result so far: 4319.41
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.

Step 9:
200 divided by 80 is 2 with a remainder of 40.
Record the quotient 2 as the next digit in the result. 
Result so far: 4319.412
If we take 160 away from 200, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 10:
80 can be fit into 400 5 times, resulting in a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 4319.4125
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.

Moving on to step 11:
80 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 4319.4125
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.

On to step 12:
If we divide 0 by 80, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 4319.4125
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.

The quotient of the division is 4319.4125, and the remainder is 0.0.