356646 divided by 80 
We want to divide 356646 by 80.

Advancing to step 1:
When dividing 3 by 80, we get 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Fetch the next digit (5) from the dividend, attach it to 3 and continue: 35 / 80

Advancing to step 2:
If we divide 35 by 80, we get 0 and a remainder of 35.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 35, we get 35.
Bring next digit (6) of the dividend behind the 35 and repeat the process: 356 / 80

Let's proceed to step 3:
When dividing 356 by 80, we get 4 with a remainder of 36.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtract 320 from 356 to get 36.
Grab the next digit (6) from the dividend, add it to 36, then carry on: 366 / 80

Let's proceed to step 4:
When dividing 366 by 80, we get 4 with a remainder of 46.
Write down 4 as next digit of the result. 
Result so far: 44.0
Subtract 320 from 366 to get 46.
Take the next digit (4) from the dividend and append it to 46, then repeat: 464 / 80

Moving on to step 5:
When dividing 464 by 80, we get 5 with a remainder of 64.
The number 5 becomes the next digit in our result. 
Result so far: 445.0
Subtract 400 from 464 to get 64.
Append the next digit (6) from the dividend to 64 and continue with: 646 / 80

Let's proceed to step 6:
When dividing 646 by 80, we get 8 with a remainder of 6.
The number 8 becomes the next digit in our result. 
Result so far: 4458.0
Deduct 640 from 646 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 7:
80 goes into 60 0 times with a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 4458.0
If we take 0 away from 60, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 8:
80 can be fit into 600 7 times, resulting in a remainder of 40.
Write down 7 as next digit of the result. 
Result so far: 4458.07
Subtracting 560 from 600 leaves us 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.

On to step 9:
If we divide 400 by 80, we get 5 and a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 4458.075
Deduct 400 from 400 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.

Advancing 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: 4458.075
The remainder is 0 after subtracting 0 from 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 11:
When dividing 0 by 80, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 4458.075
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 4458.075, with a leftover of 0.0.