We divide 83946672 by 640
Our goal is to divide 83946672 by 640.

Step 1:
When dividing 8 by 640, we get 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Fetch the next digit (3) from the dividend, attach it to 8 and continue: 83 / 640

Going ahead to step 2:
When dividing 83 by 640, we get 0 with a remainder of 83.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 83 to get 83.
Fetch the next digit (9) from the dividend, attach it to 83 and continue: 839 / 640

Going ahead to step 3:
640 goes into 839 1 times with a remainder of 199.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 640 from 839 leaves us with 199.
Include the next digit (4) from the dividend after 199, then repeat: 1994 / 640

On to step 4:
1994 divided by 640 is 3 with a remainder of 74.
Write down 3 as next digit of the result. 
Result so far: 13.0
Deduct 1920 from 1994 and we're left with 74.
Grab the next digit (6) from the dividend, add it to 74, then carry on: 746 / 640

Let's proceed to step 5:
If we divide 746 by 640, we get 1 and a remainder of 106.
Use 1 as the next digit of our solution. 
Result so far: 131.0
Deduct 640 from 746 and we're left with 106.
Append the next digit (6) from the dividend to 106 and continue with: 1066 / 640

Moving on to step 6:
1066 divided by 640 is 1 with a remainder of 426.
Use 1 as the next digit of our solution. 
Result so far: 1311.0
If we take 640 away from 1066, we end up with 426.
Include the next digit (7) from the dividend after 426, then repeat: 4267 / 640

Going ahead to step 7:
If we divide 4267 by 640, we get 6 and a remainder of 427.
The next digit of our result is 6. 
Result so far: 13116.0
The remainder is 427 after subtracting 3840 from 4267.
Fetch the next digit (2) from the dividend, attach it to 427 and continue: 4272 / 640

Let's proceed to step 8:
640 goes into 4272 6 times with a remainder of 432.
Put 6 as the next digit of the answer. 
Result so far: 131166.0
The remainder is 432 after subtracting 3840 from 4272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4320, and continue the process.

Moving on to step 9:
640 goes into 4320 6 times with a remainder of 480.
Record the quotient 6 as the next digit in the result. 
Result so far: 131166.6
If we take 3840 away from 4320, 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 10:
When dividing 4800 by 640, we get 7 with a remainder of 320.
The number 7 becomes the next digit in our result. 
Result so far: 131166.67
If we take 4480 away from 4800, we end up 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 11:
The number 640 fits into 3200 5 times, leaving a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 131166.675
Deduct 3200 from 3200 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 640 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 131166.675
If we take 0 away from 0, we end up 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 13:
0 divided by 640 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 131166.675
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.

The final result is 131166.675 with a remainder of 0.0.