Let's divide 641568 by 40
We want to figure out the number of times 641568 can be divided by 40.

Advancing to step 1:
The number 40 fits into 6 0 times, leaving a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 40

On to step 2:
The number 40 fits into 64 1 times, leaving a remainder of 24.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 40 from 64 and we're left with 24.
Append the next digit (1) from the dividend to 24 and continue with: 241 / 40

Let's proceed to step 3:
If we divide 241 by 40, we get 6 and a remainder of 1.
The next digit of our result is 6. 
Result so far: 16.0
If we subtract 240 from 241, we get 1.
Fetch the next digit (5) from the dividend, attach it to 1 and continue: 15 / 40

On to step 4:
15 divided by 40 is 0 with a remainder of 15.
The next digit of our result is 0. 
Result so far: 160.0
The remainder is 15 after subtracting 0 from 15.
Append the next digit (6) from the dividend to 15 and continue with: 156 / 40

Step 5:
156 divided by 40 is 3 with a remainder of 36.
The number 3 becomes the next digit in our result. 
Result so far: 1603.0
Subtract 120 from 156 to get 36.
Fetch the next digit (8) from the dividend, attach it to 36 and continue: 368 / 40

Let's proceed to step 6:
If we divide 368 by 40, we get 9 and a remainder of 8.
The next digit of our result is 9. 
Result so far: 16039.0
If we subtract 360 from 368, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 7:
When dividing 80 by 40, we get 2 with a remainder of 0.
Write down 2 as next digit of the result. 
Result so far: 16039.2
Deduct 80 from 80 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 8:
40 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 16039.2
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.

Moving on to step 9:
40 can be fit into 0 0 times, resulting in a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 16039.2
If we take 0 away from 0, we end up 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 result is 16039.2 with a remainder of 0.0.