We divide 355731 by 80
We want to figure out the number of times 355731 can be divided by 80.

Let's proceed to step 1:
80 goes into 3 0 times with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Include the next digit (5) from the dividend after 3, then repeat: 35 / 80

Step 2:
80 can be fit into 35 0 times, resulting in a remainder of 35.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 35 leaves us with 35.
Bring next digit (5) of the dividend behind the 35 and repeat the process: 355 / 80

On to step 3:
The number 80 fits into 355 4 times, leaving a remainder of 35.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtract 320 from 355 to get 35.
Fetch the next digit (7) from the dividend, attach it to 35 and continue: 357 / 80

Moving on to step 4:
If we divide 357 by 80, we get 4 and a remainder of 37.
Record the quotient 4 as the next digit in the result. 
Result so far: 44.0
Subtract 320 from 357 to get 37.
Grab the next digit (3) from the dividend, add it to 37, then carry on: 373 / 80

Step 5:
80 can be fit into 373 4 times, resulting in a remainder of 53.
Write down 4 as next digit of the result. 
Result so far: 444.0
Deduct 320 from 373 and we're left with 53.
Append the next digit (1) from the dividend to 53 and continue with: 531 / 80

Let's proceed to step 6:
The number 80 fits into 531 6 times, leaving a remainder of 51.
Put 6 as the next digit of the answer. 
Result so far: 4446.0
Subtracting 480 from 531 leaves us with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

On to step 7:
The number 80 fits into 510 6 times, leaving a remainder of 30.
Put 6 as the next digit of the answer. 
Result so far: 4446.6
If we subtract 480 from 510, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 8:
80 can be fit into 300 3 times, resulting in a remainder of 60.
Use 3 as the next digit of our solution. 
Result so far: 4446.63
If we subtract 240 from 300, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 9:
80 can be fit into 600 7 times, resulting in a remainder of 40.
The number 7 becomes the next digit in our result. 
Result so far: 4446.637
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.

Going ahead to step 10:
80 goes into 400 5 times with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 4446.6375
The remainder is 0 after subtracting 400 from 400.
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:
0 divided by 80 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 4446.6375
If we subtract 0 from 0, 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.

Let's proceed 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: 4446.6375
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 4446.6375, with a leftover of 0.0.