27959940 ÷ 644 
We want to divide 27959940 by 644.

Going ahead to step 1:
644 can be fit into 2 0 times, resulting in a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Take the next digit (7) from the dividend and append it to 2, then repeat: 27 / 644

Let's proceed to step 2:
644 can be fit into 27 0 times, resulting in a remainder of 27.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 27, we end up with 27.
Include the next digit (9) from the dividend after 27, then repeat: 279 / 644

Advancing to step 3:
If we divide 279 by 644, we get 0 and a remainder of 279.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 279, we get 279.
Grab the next digit (5) from the dividend, add it to 279, then carry on: 2795 / 644

Advancing to step 4:
The number 644 fits into 2795 4 times, leaving a remainder of 219.
Use 4 as the next digit of our solution. 
Result so far: 4.0
If we take 2576 away from 2795, we end up with 219.
Include the next digit (9) from the dividend after 219, then repeat: 2199 / 644

Step 5:
644 goes into 2199 3 times with a remainder of 267.
Write down 3 as next digit of the result. 
Result so far: 43.0
If we take 1932 away from 2199, we end up with 267.
Append the next digit (9) from the dividend to 267 and continue with: 2679 / 644

Going ahead to step 6:
2679 divided by 644 is 4 with a remainder of 103.
Record the quotient 4 as the next digit in the result. 
Result so far: 434.0
If we take 2576 away from 2679, we end up with 103.
Take the next digit (4) from the dividend and append it to 103, then repeat: 1034 / 644

Step 7:
644 goes into 1034 1 times with a remainder of 390.
Record the quotient 1 as the next digit in the result. 
Result so far: 4341.0
Subtract 644 from 1034 to get 390.
Fetch the next digit (0) from the dividend, attach it to 390 and continue: 3900 / 644

Going ahead to step 8:
644 can be fit into 3900 6 times, resulting in a remainder of 36.
Use 6 as the next digit of our solution. 
Result so far: 43416.0
If we take 3864 away from 3900, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 9:
If we divide 360 by 644, we get 0 and a remainder of 360.
Use 0 as the next digit of our solution. 
Result so far: 43416.0
The remainder is 360 after subtracting 0 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Step 10:
3600 divided by 644 is 5 with a remainder of 380.
Put 5 as the next digit of the answer. 
Result so far: 43416.05
The remainder is 380 after subtracting 3220 from 3600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

On to step 11:
3800 divided by 644 is 5 with a remainder of 580.
Write down 5 as next digit of the result. 
Result so far: 43416.055
If we take 3220 away from 3800, we end up with 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

In conclusion, the division gives 43416.055 with a balance of 0.058.