We look at the division of 640719 by 16 
Let's see how many times 16 fits into 640719.

Going ahead to step 1:
16 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
Deduct 0 from 6 and we're left with 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 16

Advancing to step 2:
64 divided by 16 is 4 with a remainder of 0.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtracting 64 from 64 leaves us with 0.
Include the next digit (0) from the dividend after 0, then repeat: 0 / 16

Let's proceed to step 3:
16 can be fit into 0 0 times, resulting in a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 40.0
If we subtract 0 from 0, we get 0.
Append the next digit (7) from the dividend to 0 and continue with: 7 / 16

Going ahead to step 4:
The number 16 fits into 7 0 times, leaving a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 400.0
If we subtract 0 from 7, we get 7.
Fetch the next digit (1) from the dividend, attach it to 7 and continue: 71 / 16

Let's proceed to step 5:
16 goes into 71 4 times with a remainder of 7.
Write down 4 as next digit of the result. 
Result so far: 4004.0
If we subtract 64 from 71, we get 7.
Include the next digit (9) from the dividend after 7, then repeat: 79 / 16

Let's proceed to step 6:
16 can be fit into 79 4 times, resulting in a remainder of 15.
Record the quotient 4 as the next digit in the result. 
Result so far: 40044.0
Deduct 64 from 79 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 7:
When dividing 150 by 16, we get 9 with a remainder of 6.
Put 9 as the next digit of the answer. 
Result so far: 40044.9
Subtract 144 from 150 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 8:
The number 16 fits into 60 3 times, leaving a remainder of 12.
Write down 3 as next digit of the result. 
Result so far: 40044.93
The remainder is 12 after subtracting 48 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 9:
16 can be fit into 120 7 times, resulting in a remainder of 8.
The next digit of our result is 7. 
Result so far: 40044.937
The remainder is 8 after subtracting 112 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 10:
16 can be fit into 80 5 times, resulting in a remainder of 0.
The next digit of our result is 5. 
Result so far: 40044.9375
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.

Going ahead to step 11:
0 divided by 16 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 40044.9375
Deduct 0 from 0 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 12:
0 divided by 16 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 40044.9375
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.

The final outcome is 40044.9375, with a leftover of 0.0.