640078 ÷ 29 
Our goal is to divide 640078 by 29.

Advancing to step 1:
29 goes into 6 0 times 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 / 29

On to step 2:
If we divide 64 by 29, we get 2 and a remainder of 6.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtracting 58 from 64 leaves us with 6.
Grab the next digit (0) from the dividend, add it to 6, then carry on: 60 / 29

Let's proceed to step 3:
If we divide 60 by 29, we get 2 and a remainder of 2.
Put 2 as the next digit of the answer. 
Result so far: 22.0
Subtract 58 from 60 to get 2.
Include the next digit (0) from the dividend after 2, then repeat: 20 / 29

Going ahead to step 4:
29 goes into 20 0 times with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 220.0
Deduct 0 from 20 and we're left with 20.
Take the next digit (7) from the dividend and append it to 20, then repeat: 207 / 29

Advancing to step 5:
207 divided by 29 is 7 with a remainder of 4.
Put 7 as the next digit of the answer. 
Result so far: 2207.0
Subtract 203 from 207 to get 4.
Fetch the next digit (8) from the dividend, attach it to 4 and continue: 48 / 29

Going ahead to step 6:
48 divided by 29 is 1 with a remainder of 19.
The next digit of our result is 1. 
Result so far: 22071.0
If we subtract 29 from 48, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Let's proceed to step 7:
If we divide 190 by 29, we get 6 and a remainder of 16.
Use 6 as the next digit of our solution. 
Result so far: 22071.6
Subtracting 174 from 190 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 8:
The number 29 fits into 160 5 times, leaving a remainder of 15.
The next digit of our result is 5. 
Result so far: 22071.65
Subtract 145 from 160 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 9:
If we divide 150 by 29, we get 5 and a remainder of 5.
The number 5 becomes the next digit in our result. 
Result so far: 22071.655
The remainder is 5 after subtracting 145 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The final outcome is 22071.655, with a leftover of 0.0005.