We divide 638240 by 79
Let's see how many times 79 fits into 638240.

Step 1:
The number 79 fits into 6 0 times, leaving a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Take the next digit (3) from the dividend and append it to 6, then repeat: 63 / 79

Step 2:
The number 79 fits into 63 0 times, leaving a remainder of 63.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 63 after subtracting 0 from 63.
Append the next digit (8) from the dividend to 63 and continue with: 638 / 79

Let's proceed to step 3:
When dividing 638 by 79, we get 8 with a remainder of 6.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Subtracting 632 from 638 leaves us with 6.
Fetch the next digit (2) from the dividend, attach it to 6 and continue: 62 / 79

Let's proceed to step 4:
79 goes into 62 0 times with a remainder of 62.
Put 0 as the next digit of the answer. 
Result so far: 80.0
The remainder is 62 after subtracting 0 from 62.
Append the next digit (4) from the dividend to 62 and continue with: 624 / 79

On to step 5:
If we divide 624 by 79, we get 7 and a remainder of 71.
Put 7 as the next digit of the answer. 
Result so far: 807.0
Deduct 553 from 624 and we're left with 71.
Fetch the next digit (0) from the dividend, attach it to 71 and continue: 710 / 79

Moving on to step 6:
If we divide 710 by 79, we get 8 and a remainder of 78.
Use 8 as the next digit of our solution. 
Result so far: 8078.0
The remainder is 78 after subtracting 632 from 710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

On to step 7:
If we divide 780 by 79, we get 9 and a remainder of 69.
Write down 9 as next digit of the result. 
Result so far: 8078.9
Deduct 711 from 780 and we're left 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 8:
690 divided by 79 is 8 with a remainder of 58.
Record the quotient 8 as the next digit in the result. 
Result so far: 8078.98
The remainder is 58 after subtracting 632 from 690.
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 9:
580 divided by 79 is 7 with a remainder of 27.
The number 7 becomes the next digit in our result. 
Result so far: 8078.987
Subtract 553 from 580 to get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Let's proceed to step 10:
79 can be fit into 270 3 times, resulting in a remainder of 33.
Record the quotient 3 as the next digit in the result. 
Result so far: 8078.9873
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 11:
When dividing 330 by 79, we get 4 with a remainder of 14.
Use 4 as the next digit of our solution. 
Result so far: 8078.98734
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.

On to step 12:
The number 79 fits into 140 1 times, leaving a remainder of 61.
Record the quotient 1 as the next digit in the result. 
Result so far: 8078.987341
The remainder is 61 after subtracting 79 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Going ahead to step 13:
When dividing 610 by 79, we get 7 with a remainder of 57.
Put 7 as the next digit of the answer. 
Result so far: 8078.9873417
Subtract 553 from 610 to get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Step 14:
570 divided by 79 is 7 with a remainder of 17.
Use 7 as the next digit of our solution. 
Result so far: 8078.98734177
Deduct 553 from 570 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

The final outcome is 8078.98734177, with a leftover of 1.7e-08.