We're dividing 642515 by 79 
We're looking to find how many times 79 goes into 642515.

Let's proceed to step 1:
6 divided by 79 is 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 79

Going ahead to step 2:
64 divided by 79 is 0 with a remainder of 64.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 64, we get 64.
Append the next digit (2) from the dividend to 64 and continue with: 642 / 79

Moving on to step 3:
The number 79 fits into 642 8 times, leaving a remainder of 10.
The next digit of our result is 8. 
Result so far: 8.0
If we subtract 632 from 642, we get 10.
Append the next digit (5) from the dividend to 10 and continue with: 105 / 79

Let's proceed to step 4:
79 can be fit into 105 1 times, resulting in a remainder of 26.
Record the quotient 1 as the next digit in the result. 
Result so far: 81.0
If we take 79 away from 105, we end up with 26.
Bring next digit (1) of the dividend behind the 26 and repeat the process: 261 / 79

Moving on to step 5:
79 goes into 261 3 times with a remainder of 24.
Record the quotient 3 as the next digit in the result. 
Result so far: 813.0
Deduct 237 from 261 and we're left with 24.
Include the next digit (5) from the dividend after 24, then repeat: 245 / 79

Going ahead to step 6:
When dividing 245 by 79, we get 3 with a remainder of 8.
The number 3 becomes the next digit in our result. 
Result so far: 8133.0
Subtracting 237 from 245 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 7:
When dividing 80 by 79, we get 1 with a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 8133.1
Subtract 79 from 80 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 8:
When dividing 10 by 79, we get 0 with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 8133.1
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 9:
When dividing 100 by 79, we get 1 with a remainder of 21.
Write down 1 as next digit of the result. 
Result so far: 8133.101
Deduct 79 from 100 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Going ahead to step 10:
If we divide 210 by 79, we get 2 and a remainder of 52.
Write down 2 as next digit of the result. 
Result so far: 8133.1012
If we take 158 away from 210, we end up with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Let's proceed to step 11:
520 divided by 79 is 6 with a remainder of 46.
Write down 6 as next digit of the result. 
Result so far: 8133.10126
The remainder is 46 after subtracting 474 from 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 12:
460 divided by 79 is 5 with a remainder of 65.
The next digit of our result is 5. 
Result so far: 8133.101265
Deduct 395 from 460 and we're left with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Step 13:
The number 79 fits into 650 8 times, leaving a remainder of 18.
Record the quotient 8 as the next digit in the result. 
Result so far: 8133.1012658
If we subtract 632 from 650, we get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 14:
180 divided by 79 is 2 with a remainder of 22.
Write down 2 as next digit of the result. 
Result so far: 8133.10126582
If we subtract 158 from 180, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

After the division, we end up with 8133.10126582 and a remainder of 2.2e-08.