80355384 ÷ 45 
We want to divide 80355384 by 45.

Advancing to step 1:
When dividing 8 by 45, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 45

Step 2:
45 can be fit into 80 1 times, resulting in a remainder of 35.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 35 after subtracting 45 from 80.
Include the next digit (3) from the dividend after 35, then repeat: 353 / 45

Advancing to step 3:
The number 45 fits into 353 7 times, leaving a remainder of 38.
Put 7 as the next digit of the answer. 
Result so far: 17.0
Subtract 315 from 353 to get 38.
Take the next digit (5) from the dividend and append it to 38, then repeat: 385 / 45

Going ahead to step 4:
If we divide 385 by 45, we get 8 and a remainder of 25.
Write down 8 as next digit of the result. 
Result so far: 178.0
If we subtract 360 from 385, we get 25.
Grab the next digit (5) from the dividend, add it to 25, then carry on: 255 / 45

Going ahead to step 5:
45 goes into 255 5 times with a remainder of 30.
Use 5 as the next digit of our solution. 
Result so far: 1785.0
Subtracting 225 from 255 leaves us with 30.
Bring next digit (3) of the dividend behind the 30 and repeat the process: 303 / 45

Going ahead to step 6:
When dividing 303 by 45, we get 6 with a remainder of 33.
The next digit of our result is 6. 
Result so far: 17856.0
Subtracting 270 from 303 leaves us with 33.
Grab the next digit (8) from the dividend, add it to 33, then carry on: 338 / 45

Advancing to step 7:
When dividing 338 by 45, we get 7 with a remainder of 23.
Put 7 as the next digit of the answer. 
Result so far: 178567.0
Subtract 315 from 338 to get 23.
Grab the next digit (4) from the dividend, add it to 23, then carry on: 234 / 45

Going ahead to step 8:
If we divide 234 by 45, we get 5 and a remainder of 9.
The next digit of our result is 5. 
Result so far: 1785675.0
The remainder is 9 after subtracting 225 from 234.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 9:
When dividing 90 by 45, we get 2 with a remainder of 0.
The number 2 becomes the next digit in our result. 
Result so far: 1785675.2
Deduct 90 from 90 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 10:
When dividing 0 by 45, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 1785675.2
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.

Moving on to step 11:
0 divided by 45 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 1785675.2
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.

After the division, we end up with 1785675.2 and a remainder of 0.0.