We divide 641408 by 40
We're looking to find how many times 40 goes into 641408.

Advancing to step 1:
6 divided by 40 is 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 40

Advancing to step 2:
When dividing 64 by 40, we get 1 with a remainder of 24.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 40 from 64 leaves us with 24.
Take the next digit (1) from the dividend and append it to 24, then repeat: 241 / 40

Going ahead to step 3:
If we divide 241 by 40, we get 6 and a remainder of 1.
Write down 6 as next digit of the result. 
Result so far: 16.0
Subtracting 240 from 241 leaves us with 1.
Grab the next digit (4) from the dividend, add it to 1, then carry on: 14 / 40

Moving on to step 4:
14 divided by 40 is 0 with a remainder of 14.
The number 0 becomes the next digit in our result. 
Result so far: 160.0
Subtract 0 from 14 to get 14.
Take the next digit (0) from the dividend and append it to 14, then repeat: 140 / 40

Step 5:
When dividing 140 by 40, we get 3 with a remainder of 20.
Write down 3 as next digit of the result. 
Result so far: 1603.0
The remainder is 20 after subtracting 120 from 140.
Take the next digit (8) from the dividend and append it to 20, then repeat: 208 / 40

Step 6:
If we divide 208 by 40, we get 5 and a remainder of 8.
The next digit of our result is 5. 
Result so far: 16035.0
Deduct 200 from 208 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 7:
The number 40 fits into 80 2 times, leaving a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 16035.2
If we subtract 80 from 80, 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 8:
0 divided by 40 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 16035.2
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.

Moving on to step 9:
The number 40 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 16035.2
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.

In conclusion, the division gives 16035.2 with a balance of 0.0.