We're dividing 79759291 by 644 
Let's see how many times 644 fits into 79759291.

On to step 1:
The number 644 fits into 7 0 times, leaving a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Bring next digit (9) of the dividend behind the 7 and repeat the process: 79 / 644

Step 2:
When dividing 79 by 644, we get 0 with a remainder of 79.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 79 leaves us with 79.
Fetch the next digit (7) from the dividend, attach it to 79 and continue: 797 / 644

Moving on to step 3:
797 divided by 644 is 1 with a remainder of 153.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 644 away from 797, we end up with 153.
Take the next digit (5) from the dividend and append it to 153, then repeat: 1535 / 644

On to step 4:
If we divide 1535 by 644, we get 2 and a remainder of 247.
The next digit of our result is 2. 
Result so far: 12.0
If we subtract 1288 from 1535, we get 247.
Append the next digit (9) from the dividend to 247 and continue with: 2479 / 644

Advancing to step 5:
When dividing 2479 by 644, we get 3 with a remainder of 547.
The next digit of our result is 3. 
Result so far: 123.0
Subtracting 1932 from 2479 leaves us with 547.
Take the next digit (2) from the dividend and append it to 547, then repeat: 5472 / 644

On to step 6:
5472 divided by 644 is 8 with a remainder of 320.
Put 8 as the next digit of the answer. 
Result so far: 1238.0
If we subtract 5152 from 5472, we get 320.
Take the next digit (9) from the dividend and append it to 320, then repeat: 3209 / 644

Let's proceed to step 7:
When dividing 3209 by 644, we get 4 with a remainder of 633.
Write down 4 as next digit of the result. 
Result so far: 12384.0
Subtract 2576 from 3209 to get 633.
Fetch the next digit (1) from the dividend, attach it to 633 and continue: 6331 / 644

Moving on to step 8:
644 goes into 6331 9 times with a remainder of 535.
Put 9 as the next digit of the answer. 
Result so far: 123849.0
If we subtract 5796 from 6331, we get 535.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5350, and continue the process.

Going ahead to step 9:
644 can be fit into 5350 8 times, resulting in a remainder of 198.
Put 8 as the next digit of the answer. 
Result so far: 123849.8
Deduct 5152 from 5350 and we're left with 198.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1980, and continue the process.

Let's proceed to step 10:
644 can be fit into 1980 3 times, resulting in a remainder of 48.
Record the quotient 3 as the next digit in the result. 
Result so far: 123849.83
Subtracting 1932 from 1980 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 11:
644 can be fit into 480 0 times, resulting in a remainder of 480.
Record the quotient 0 as the next digit in the result. 
Result so far: 123849.83
If we subtract 0 from 480, we get 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Step 12:
The number 644 fits into 4800 7 times, leaving a remainder of 292.
Put 7 as the next digit of the answer. 
Result so far: 123849.8307
If we take 4508 away from 4800, we end up with 292.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2920, and continue the process.

Going ahead to step 13:
644 can be fit into 2920 4 times, resulting in a remainder of 344.
The number 4 becomes the next digit in our result. 
Result so far: 123849.83074
If we subtract 2576 from 2920, we get 344.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

Going ahead to step 14:
If we divide 3440 by 644, we get 5 and a remainder of 220.
The number 5 becomes the next digit in our result. 
Result so far: 123849.830745
If we take 3220 away from 3440, we end up with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

On to step 15:
When dividing 2200 by 644, we get 3 with a remainder of 268.
The number 3 becomes the next digit in our result. 
Result so far: 123849.8307453
The remainder is 268 after subtracting 1932 from 2200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2680, and continue the process.

On to step 16:
2680 divided by 644 is 4 with a remainder of 104.
Write down 4 as next digit of the result. 
Result so far: 123849.83074534
If we take 2576 away from 2680, we end up with 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

In conclusion, the division gives 123849.83074534 with a balance of 1.04e-07.