645428 ÷ 79 
We want to figure out the number of times 645428 can be divided by 79.

Going ahead to step 1:
79 can be fit into 6 0 times, resulting in a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 79

Going ahead to step 2:
The number 79 fits into 64 0 times, leaving 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.
Grab the next digit (5) from the dividend, add it to 64, then carry on: 645 / 79

Step 3:
645 divided by 79 is 8 with a remainder of 13.
Use 8 as the next digit of our solution. 
Result so far: 8.0
If we take 632 away from 645, we end up with 13.
Bring next digit (4) of the dividend behind the 13 and repeat the process: 134 / 79

On to step 4:
134 divided by 79 is 1 with a remainder of 55.
The number 1 becomes the next digit in our result. 
Result so far: 81.0
The remainder is 55 after subtracting 79 from 134.
Append the next digit (2) from the dividend to 55 and continue with: 552 / 79

Going ahead to step 5:
If we divide 552 by 79, we get 6 and a remainder of 78.
Put 6 as the next digit of the answer. 
Result so far: 816.0
Subtracting 474 from 552 leaves us with 78.
Include the next digit (8) from the dividend after 78, then repeat: 788 / 79

Going ahead to step 6:
788 divided by 79 is 9 with a remainder of 77.
Put 9 as the next digit of the answer. 
Result so far: 8169.0
Subtracting 711 from 788 leaves us with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Let's proceed to step 7:
If we divide 770 by 79, we get 9 and a remainder of 59.
Put 9 as the next digit of the answer. 
Result so far: 8169.9
Subtracting 711 from 770 leaves us with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Advancing to step 8:
590 divided by 79 is 7 with a remainder of 37.
The number 7 becomes the next digit in our result. 
Result so far: 8169.97
Deduct 553 from 590 and we're left 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.

Moving on to step 9:
370 divided by 79 is 4 with a remainder of 54.
The number 4 becomes the next digit in our result. 
Result so far: 8169.974
If we subtract 316 from 370, we get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Let's proceed to step 10:
540 divided by 79 is 6 with a remainder of 66.
The number 6 becomes the next digit in our result. 
Result so far: 8169.9746
Deduct 474 from 540 and we're left with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

On to step 11:
When dividing 660 by 79, we get 8 with a remainder of 28.
Write down 8 as next digit of the result. 
Result so far: 8169.97468
Subtract 632 from 660 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 12:
79 can be fit into 280 3 times, resulting in a remainder of 43.
Use 3 as the next digit of our solution. 
Result so far: 8169.974683
The remainder is 43 after subtracting 237 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Going ahead to step 13:
79 goes into 430 5 times with a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 8169.9746835
The remainder is 35 after subtracting 395 from 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 14:
The number 79 fits into 350 4 times, leaving a remainder of 34.
Put 4 as the next digit of the answer. 
Result so far: 8169.97468354
Subtract 316 from 350 to get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

The quotient of the division is 8169.97468354, and the remainder is 3.4e-08.