801343 divided by 45 
We're looking to find how many times 45 goes into 801343.

Advancing to step 1:
When dividing 8 by 45, we get 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Fetch the next digit (0) from the dividend, attach it to 8 and continue: 80 / 45

Going ahead to step 2:
45 can be fit into 80 1 times, resulting in a remainder of 35.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 45 from 80 and we're left with 35.
Include the next digit (1) from the dividend after 35, then repeat: 351 / 45

On to step 3:
351 divided by 45 is 7 with a remainder of 36.
Use 7 as the next digit of our solution. 
Result so far: 17.0
Deduct 315 from 351 and we're left with 36.
Fetch the next digit (3) from the dividend, attach it to 36 and continue: 363 / 45

On to step 4:
If we divide 363 by 45, we get 8 and a remainder of 3.
Write down 8 as next digit of the result. 
Result so far: 178.0
If we subtract 360 from 363, we get 3.
Grab the next digit (4) from the dividend, add it to 3, then carry on: 34 / 45

Going ahead to step 5:
When dividing 34 by 45, we get 0 with a remainder of 34.
The number 0 becomes the next digit in our result. 
Result so far: 1780.0
Subtracting 0 from 34 leaves us with 34.
Include the next digit (3) from the dividend after 34, then repeat: 343 / 45

Step 6:
When dividing 343 by 45, we get 7 with a remainder of 28.
The number 7 becomes the next digit in our result. 
Result so far: 17807.0
Deduct 315 from 343 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 7:
280 divided by 45 is 6 with a remainder of 10.
Use 6 as the next digit of our solution. 
Result so far: 17807.6
Deduct 270 from 280 and we're left 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.

Going ahead to step 8:
45 goes into 100 2 times with a remainder of 10.
Put 2 as the next digit of the answer. 
Result so far: 17807.62
If we subtract 90 from 100, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 9:
If we divide 100 by 45, we get 2 and a remainder of 10.
Use 2 as the next digit of our solution. 
Result so far: 17807.622
The remainder is 10 after subtracting 90 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The quotient of the division is 17807.622, and the remainder is 0.001.