644322 ÷ 79 
Our goal is to divide 644322 by 79.

On to step 1:
If we divide 6 by 79, we get 0 and a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 79

On to step 2:
When dividing 64 by 79, we get 0 with a remainder of 64.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 64 after subtracting 0 from 64.
Grab the next digit (4) from the dividend, add it to 64, then carry on: 644 / 79

Moving on to step 3:
79 can be fit into 644 8 times, resulting in a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 8.0
If we subtract 632 from 644, we get 12.
Fetch the next digit (3) from the dividend, attach it to 12 and continue: 123 / 79

Moving on to step 4:
When dividing 123 by 79, we get 1 with a remainder of 44.
The next digit of our result is 1. 
Result so far: 81.0
If we subtract 79 from 123, we get 44.
Grab the next digit (2) from the dividend, add it to 44, then carry on: 442 / 79

Going ahead to step 5:
79 goes into 442 5 times with a remainder of 47.
Use 5 as the next digit of our solution. 
Result so far: 815.0
Deduct 395 from 442 and we're left with 47.
Bring next digit (2) of the dividend behind the 47 and repeat the process: 472 / 79

Going ahead to step 6:
When dividing 472 by 79, we get 5 with a remainder of 77.
The number 5 becomes the next digit in our result. 
Result so far: 8155.0
The remainder is 77 after subtracting 395 from 472.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Moving on to step 7:
When dividing 770 by 79, we get 9 with a remainder of 59.
Use 9 as the next digit of our solution. 
Result so far: 8155.9
Subtract 711 from 770 to get 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Step 8:
The number 79 fits into 590 7 times, leaving a remainder of 37.
The next digit of our result is 7. 
Result so far: 8155.97
Subtracting 553 from 590 leaves us with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Going ahead to step 9:
79 can be fit into 370 4 times, resulting in a remainder of 54.
The next digit of our result is 4. 
Result so far: 8155.974
If we take 316 away from 370, we end up with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Advancing to step 10:
When dividing 540 by 79, we get 6 with a remainder of 66.
Record the quotient 6 as the next digit in the result. 
Result so far: 8155.9746
If we subtract 474 from 540, we get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Advancing to step 11:
When dividing 660 by 79, we get 8 with a remainder of 28.
Put 8 as the next digit of the answer. 
Result so far: 8155.97468
The remainder is 28 after subtracting 632 from 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Going ahead to step 12:
79 goes into 280 3 times with a remainder of 43.
Use 3 as the next digit of our solution. 
Result so far: 8155.974683
Deduct 237 from 280 and we're left with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Moving on to step 13:
79 can be fit into 430 5 times, resulting in a remainder of 35.
Use 5 as the next digit of our solution. 
Result so far: 8155.9746835
Deduct 395 from 430 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 14:
The number 79 fits into 350 4 times, leaving a remainder of 34.
Write down 4 as next digit of the result. 
Result so far: 8155.97468354
If we take 316 away from 350, we end up with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Our division results in 8155.97468354 with a remaining 3.4e-08.