639049 divided by 40 
Our goal is to divide 639049 by 40.

On to step 1:
40 can be fit into 6 0 times, resulting in a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Bring next digit (3) of the dividend behind the 6 and repeat the process: 63 / 40

Going ahead to step 2:
When dividing 63 by 40, we get 1 with a remainder of 23.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 40 from 63 and we're left with 23.
Take the next digit (9) from the dividend and append it to 23, then repeat: 239 / 40

Moving on to step 3:
239 divided by 40 is 5 with a remainder of 39.
Record the quotient 5 as the next digit in the result. 
Result so far: 15.0
The remainder is 39 after subtracting 200 from 239.
Bring next digit (0) of the dividend behind the 39 and repeat the process: 390 / 40

Let's proceed to step 4:
40 can be fit into 390 9 times, resulting in a remainder of 30.
Record the quotient 9 as the next digit in the result. 
Result so far: 159.0
If we take 360 away from 390, we end up with 30.
Fetch the next digit (4) from the dividend, attach it to 30 and continue: 304 / 40

Let's proceed to step 5:
304 divided by 40 is 7 with a remainder of 24.
Put 7 as the next digit of the answer. 
Result so far: 1597.0
Subtract 280 from 304 to get 24.
Include the next digit (9) from the dividend after 24, then repeat: 249 / 40

Step 6:
40 goes into 249 6 times with a remainder of 9.
Use 6 as the next digit of our solution. 
Result so far: 15976.0
The remainder is 9 after subtracting 240 from 249.
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 7:
If we divide 90 by 40, we get 2 and a remainder of 10.
Write down 2 as next digit of the result. 
Result so far: 15976.2
Deduct 80 from 90 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.

Advancing to step 8:
When dividing 100 by 40, we get 2 with a remainder of 20.
Write down 2 as next digit of the result. 
Result so far: 15976.22
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.

In conclusion, the division gives 15976.22 with a balance of 0.02.