65665831 ÷ 640 
We want to divide 65665831 by 640.

Moving on to step 1:
6 divided by 640 is 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Take the next digit (5) from the dividend and append it to 6, then repeat: 65 / 640

Step 2:
640 can be fit into 65 0 times, resulting in a remainder of 65.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 65 and we're left with 65.
Fetch the next digit (6) from the dividend, attach it to 65 and continue: 656 / 640

On to step 3:
When dividing 656 by 640, we get 1 with a remainder of 16.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 16 after subtracting 640 from 656.
Take the next digit (6) from the dividend and append it to 16, then repeat: 166 / 640

Moving on to step 4:
640 can be fit into 166 0 times, resulting in a remainder of 166.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Subtract 0 from 166 to get 166.
Fetch the next digit (5) from the dividend, attach it to 166 and continue: 1665 / 640

Moving on to step 5:
640 goes into 1665 2 times with a remainder of 385.
Put 2 as the next digit of the answer. 
Result so far: 102.0
Deduct 1280 from 1665 and we're left with 385.
Include the next digit (8) from the dividend after 385, then repeat: 3858 / 640

Let's proceed to step 6:
640 goes into 3858 6 times with a remainder of 18.
The next digit of our result is 6. 
Result so far: 1026.0
Deduct 3840 from 3858 and we're left with 18.
Grab the next digit (3) from the dividend, add it to 18, then carry on: 183 / 640

Let's proceed to step 7:
If we divide 183 by 640, we get 0 and a remainder of 183.
Record the quotient 0 as the next digit in the result. 
Result so far: 10260.0
Subtract 0 from 183 to get 183.
Grab the next digit (1) from the dividend, add it to 183, then carry on: 1831 / 640

Going ahead to step 8:
The number 640 fits into 1831 2 times, leaving a remainder of 551.
The next digit of our result is 2. 
Result so far: 102602.0
Subtract 1280 from 1831 to get 551.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5510, and continue the process.

Moving on to step 9:
If we divide 5510 by 640, we get 8 and a remainder of 390.
Write down 8 as next digit of the result. 
Result so far: 102602.8
Subtract 5120 from 5510 to get 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3900, and continue the process.

Moving on to step 10:
3900 divided by 640 is 6 with a remainder of 60.
Use 6 as the next digit of our solution. 
Result so far: 102602.86
The remainder is 60 after subtracting 3840 from 3900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 11:
If we divide 600 by 640, we get 0 and a remainder of 600.
Write down 0 as next digit of the result. 
Result so far: 102602.86
The remainder is 600 after subtracting 0 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

Going ahead to step 12:
If we divide 6000 by 640, we get 9 and a remainder of 240.
Put 9 as the next digit of the answer. 
Result so far: 102602.8609
If we subtract 5760 from 6000, we get 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Step 13:
The number 640 fits into 2400 3 times, leaving a remainder of 480.
Record the quotient 3 as the next digit in the result. 
Result so far: 102602.86093
If we take 1920 away from 2400, we end up with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

On to step 14:
640 can be fit into 4800 7 times, resulting in a remainder of 320.
The next digit of our result is 7. 
Result so far: 102602.860937
Subtracting 4480 from 4800 leaves us with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Advancing to step 15:
640 goes into 3200 5 times with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 102602.8609375
Subtracting 3200 from 3200 leaves us 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.

On to step 16:
640 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: 102602.8609375
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.

In conclusion, the division gives 102602.8609375 with a balance of 0.0.