We look at the division of 646304 by 79 
Let's see how many times 79 fits into 646304.

On to step 1:
79 goes into 6 0 times with 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.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 79

On to step 2:
79 can be fit into 64 0 times, resulting in a remainder of 64.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 64 and we're left with 64.
Fetch the next digit (6) from the dividend, attach it to 64 and continue: 646 / 79

Advancing to step 3:
If we divide 646 by 79, we get 8 and a remainder of 14.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
If we take 632 away from 646, we end up with 14.
Fetch the next digit (3) from the dividend, attach it to 14 and continue: 143 / 79

Let's proceed to step 4:
79 can be fit into 143 1 times, resulting in a remainder of 64.
Put 1 as the next digit of the answer. 
Result so far: 81.0
The remainder is 64 after subtracting 79 from 143.
Append the next digit (0) from the dividend to 64 and continue with: 640 / 79

On to step 5:
When dividing 640 by 79, we get 8 with a remainder of 8.
The next digit of our result is 8. 
Result so far: 818.0
Deduct 632 from 640 and we're left with 8.
Bring next digit (4) of the dividend behind the 8 and repeat the process: 84 / 79

Advancing to step 6:
79 goes into 84 1 times with a remainder of 5.
Put 1 as the next digit of the answer. 
Result so far: 8181.0
The remainder is 5 after subtracting 79 from 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 7:
When dividing 50 by 79, we get 0 with a remainder of 50.
Write down 0 as next digit of the result. 
Result so far: 8181.0
Subtracting 0 from 50 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 8:
The number 79 fits into 500 6 times, leaving a remainder of 26.
Use 6 as the next digit of our solution. 
Result so far: 8181.06
The remainder is 26 after subtracting 474 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Step 9:
79 can be fit into 260 3 times, resulting in a remainder of 23.
Put 3 as the next digit of the answer. 
Result so far: 8181.063
Subtracting 237 from 260 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Moving on to step 10:
79 can be fit into 230 2 times, resulting in a remainder of 72.
The number 2 becomes the next digit in our result. 
Result so far: 8181.0632
If we take 158 away from 230, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Advancing to step 11:
If we divide 720 by 79, we get 9 and a remainder of 9.
Use 9 as the next digit of our solution. 
Result so far: 8181.06329
If we take 711 away from 720, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 12:
79 can be fit into 90 1 times, resulting in a remainder of 11.
Use 1 as the next digit of our solution. 
Result so far: 8181.063291
If we subtract 79 from 90, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Advancing to step 13:
The number 79 fits into 110 1 times, leaving a remainder of 31.
The next digit of our result is 1. 
Result so far: 8181.0632911
If we subtract 79 from 110, we get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

The final result is 8181.0632911 with a remainder of 3.1e-07.