813841 divided by 40 
We want to figure out the number of times 813841 can be divided by 40.

Moving on to step 1:
8 divided by 40 is 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.
Fetch the next digit (1) from the dividend, attach it to 8 and continue: 81 / 40

Going ahead to step 2:
The number 40 fits into 81 2 times, leaving a remainder of 1.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we take 80 away from 81, we end up with 1.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 40

Advancing to step 3:
40 goes into 13 0 times with a remainder of 13.
Write down 0 as next digit of the result. 
Result so far: 20.0
If we subtract 0 from 13, we get 13.
Grab the next digit (8) from the dividend, add it to 13, then carry on: 138 / 40

Step 4:
138 divided by 40 is 3 with a remainder of 18.
The next digit of our result is 3. 
Result so far: 203.0
If we take 120 away from 138, we end up with 18.
Bring next digit (4) of the dividend behind the 18 and repeat the process: 184 / 40

On to step 5:
When dividing 184 by 40, we get 4 with a remainder of 24.
Write down 4 as next digit of the result. 
Result so far: 2034.0
Subtracting 160 from 184 leaves us with 24.
Include the next digit (1) from the dividend after 24, then repeat: 241 / 40

Moving on to step 6:
241 divided by 40 is 6 with a remainder of 1.
Use 6 as the next digit of our solution. 
Result so far: 20346.0
If we subtract 240 from 241, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 7:
When dividing 10 by 40, we get 0 with a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 20346.0
If we subtract 0 from 10, 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.

Let's proceed to step 8:
40 goes into 100 2 times with a remainder of 20.
Record the quotient 2 as the next digit in the result. 
Result so far: 20346.02
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.

Let's proceed to step 9:
40 can be fit into 200 5 times, resulting in a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 20346.025
Deduct 200 from 200 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.

Let's proceed to step 10:
When dividing 0 by 40, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 20346.025
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.

On to step 11:
0 divided by 40 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 20346.025
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.

Our division results in 20346.025 with a remaining 0.0.