639339 ÷ 79 
We're looking to find how many times 79 goes into 639339.

On to step 1:
6 divided by 79 is 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 79

On to step 2:
79 can be fit into 63 0 times, resulting in a remainder of 63.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 63, we end up with 63.
Include the next digit (9) from the dividend after 63, then repeat: 639 / 79

Let's proceed to step 3:
If we divide 639 by 79, we get 8 and a remainder of 7.
Write down 8 as next digit of the result. 
Result so far: 8.0
Deduct 632 from 639 and we're left with 7.
Grab the next digit (3) from the dividend, add it to 7, then carry on: 73 / 79

Let's proceed to step 4:
79 can be fit into 73 0 times, resulting in a remainder of 73.
The next digit of our result is 0. 
Result so far: 80.0
Subtracting 0 from 73 leaves us with 73.
Append the next digit (3) from the dividend to 73 and continue with: 733 / 79

Moving on to step 5:
733 divided by 79 is 9 with a remainder of 22.
Put 9 as the next digit of the answer. 
Result so far: 809.0
Deduct 711 from 733 and we're left with 22.
Grab the next digit (9) from the dividend, add it to 22, then carry on: 229 / 79

Step 6:
79 can be fit into 229 2 times, resulting in a remainder of 71.
Write down 2 as next digit of the result. 
Result so far: 8092.0
If we take 158 away from 229, we end up with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Let's proceed to step 7:
If we divide 710 by 79, we get 8 and a remainder of 78.
Record the quotient 8 as the next digit in the result. 
Result so far: 8092.8
Subtract 632 from 710 to get 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Going ahead to step 8:
79 goes into 780 9 times with a remainder of 69.
Put 9 as the next digit of the answer. 
Result so far: 8092.89
Subtracting 711 from 780 leaves us with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Step 9:
690 divided by 79 is 8 with a remainder of 58.
Write down 8 as next digit of the result. 
Result so far: 8092.898
Subtract 632 from 690 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Going ahead to step 10:
79 goes into 580 7 times with a remainder of 27.
Use 7 as the next digit of our solution. 
Result so far: 8092.8987
If we take 553 away from 580, we end up with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Step 11:
When dividing 270 by 79, we get 3 with a remainder of 33.
The number 3 becomes the next digit in our result. 
Result so far: 8092.89873
Deduct 237 from 270 and we're left with 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

On to step 12:
330 divided by 79 is 4 with a remainder of 14.
The next digit of our result is 4. 
Result so far: 8092.898734
Deduct 316 from 330 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 13:
79 can be fit into 140 1 times, resulting in a remainder of 61.
The number 1 becomes the next digit in our result. 
Result so far: 8092.8987341
Deduct 79 from 140 and we're left with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Moving on to step 14:
If we divide 610 by 79, we get 7 and a remainder of 57.
The number 7 becomes the next digit in our result. 
Result so far: 8092.89873417
If we take 553 away from 610, we end up with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

The final result is 8092.89873417 with a remainder of 5.7e-08.