Let's divide 67409312 by 639
We want to figure out the number of times 67409312 can be divided by 639.

On to step 1:
The number 639 fits into 6 0 times, leaving a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Bring next digit (7) of the dividend behind the 6 and repeat the process: 67 / 639

Let's proceed to step 2:
67 divided by 639 is 0 with a remainder of 67.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 67 and we're left with 67.
Fetch the next digit (4) from the dividend, attach it to 67 and continue: 674 / 639

Advancing to step 3:
639 goes into 674 1 times with a remainder of 35.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 639 from 674 to get 35.
Bring next digit (0) of the dividend behind the 35 and repeat the process: 350 / 639

Moving on to step 4:
639 goes into 350 0 times with a remainder of 350.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Subtracting 0 from 350 leaves us with 350.
Grab the next digit (9) from the dividend, add it to 350, then carry on: 3509 / 639

Let's proceed to step 5:
The number 639 fits into 3509 5 times, leaving a remainder of 314.
Use 5 as the next digit of our solution. 
Result so far: 105.0
Deduct 3195 from 3509 and we're left with 314.
Grab the next digit (3) from the dividend, add it to 314, then carry on: 3143 / 639

Advancing to step 6:
The number 639 fits into 3143 4 times, leaving a remainder of 587.
Put 4 as the next digit of the answer. 
Result so far: 1054.0
Subtract 2556 from 3143 to get 587.
Include the next digit (1) from the dividend after 587, then repeat: 5871 / 639

On to step 7:
When dividing 5871 by 639, we get 9 with a remainder of 120.
Write down 9 as next digit of the result. 
Result so far: 10549.0
Subtracting 5751 from 5871 leaves us with 120.
Append the next digit (2) from the dividend to 120 and continue with: 1202 / 639

Going ahead to step 8:
When dividing 1202 by 639, we get 1 with a remainder of 563.
The next digit of our result is 1. 
Result so far: 105491.0
If we subtract 639 from 1202, we get 563.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5630, and continue the process.

Advancing to step 9:
5630 divided by 639 is 8 with a remainder of 518.
The next digit of our result is 8. 
Result so far: 105491.8
If we subtract 5112 from 5630, we get 518.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5180, and continue the process.

Let's proceed to step 10:
If we divide 5180 by 639, we get 8 and a remainder of 68.
Record the quotient 8 as the next digit in the result. 
Result so far: 105491.88
If we subtract 5112 from 5180, we get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

After the division, we end up with 105491.88 and a remainder of 0.068.