We're dividing 644151 by 79 
We want to figure out the number of times 644151 can be divided by 79.

Let's proceed to step 1:
6 divided by 79 is 0 with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 79

Advancing to step 2:
The number 79 fits into 64 0 times, leaving a remainder of 64.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 64 to get 64.
Fetch the next digit (4) from the dividend, attach it to 64 and continue: 644 / 79

Moving on to step 3:
644 divided by 79 is 8 with a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
The remainder is 12 after subtracting 632 from 644.
Fetch the next digit (1) from the dividend, attach it to 12 and continue: 121 / 79

Going ahead to step 4:
79 goes into 121 1 times with a remainder of 42.
The number 1 becomes the next digit in our result. 
Result so far: 81.0
The remainder is 42 after subtracting 79 from 121.
Grab the next digit (5) from the dividend, add it to 42, then carry on: 425 / 79

Step 5:
425 divided by 79 is 5 with a remainder of 30.
Write down 5 as next digit of the result. 
Result so far: 815.0
The remainder is 30 after subtracting 395 from 425.
Include the next digit (1) from the dividend after 30, then repeat: 301 / 79

On to step 6:
When dividing 301 by 79, we get 3 with a remainder of 64.
Use 3 as the next digit of our solution. 
Result so far: 8153.0
If we take 237 away from 301, we end up with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

On to step 7:
When dividing 640 by 79, we get 8 with a remainder of 8.
Write down 8 as next digit of the result. 
Result so far: 8153.8
If we subtract 632 from 640, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 8:
When dividing 80 by 79, we get 1 with a remainder of 1.
Record the quotient 1 as the next digit in the result. 
Result so far: 8153.81
If we subtract 79 from 80, we 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.

Step 9:
If we divide 10 by 79, we get 0 and a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 8153.81
If we take 0 away from 10, we end up 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.

Step 10:
100 divided by 79 is 1 with a remainder of 21.
Record the quotient 1 as the next digit in the result. 
Result so far: 8153.8101
The remainder is 21 after subtracting 79 from 100.
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 11:
If we divide 210 by 79, we get 2 and a remainder of 52.
Record the quotient 2 as the next digit in the result. 
Result so far: 8153.81012
The remainder is 52 after subtracting 158 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Going ahead to step 12:
79 goes into 520 6 times with a remainder of 46.
Use 6 as the next digit of our solution. 
Result so far: 8153.810126
Subtracting 474 from 520 leaves us with 46.
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 13:
79 goes into 460 5 times with a remainder of 65.
Write down 5 as next digit of the result. 
Result so far: 8153.8101265
Subtract 395 from 460 to get 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Going ahead to step 14:
650 divided by 79 is 8 with a remainder of 18.
Put 8 as the next digit of the answer. 
Result so far: 8153.81012658
Subtracting 632 from 650 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

The final outcome is 8153.81012658, with a leftover of 1.8e-08.