11945577 divided by 644 
Let's see how many times 644 fits into 11945577.

Moving on to step 1:
When dividing 1 by 644, we get 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Fetch the next digit (1) from the dividend, attach it to 1 and continue: 11 / 644

Step 2:
The number 644 fits into 11 0 times, leaving a remainder of 11.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 11, we get 11.
Take the next digit (9) from the dividend and append it to 11, then repeat: 119 / 644

Moving on to step 3:
644 goes into 119 0 times with a remainder of 119.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 119 leaves us with 119.
Append the next digit (4) from the dividend to 119 and continue with: 1194 / 644

Let's proceed to step 4:
644 can be fit into 1194 1 times, resulting in a remainder of 550.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 644 from 1194, we get 550.
Grab the next digit (5) from the dividend, add it to 550, then carry on: 5505 / 644

Going ahead to step 5:
644 goes into 5505 8 times with a remainder of 353.
Use 8 as the next digit of our solution. 
Result so far: 18.0
If we take 5152 away from 5505, we end up with 353.
Fetch the next digit (5) from the dividend, attach it to 353 and continue: 3535 / 644

On to step 6:
644 can be fit into 3535 5 times, resulting in a remainder of 315.
Use 5 as the next digit of our solution. 
Result so far: 185.0
Subtract 3220 from 3535 to get 315.
Take the next digit (7) from the dividend and append it to 315, then repeat: 3157 / 644

Step 7:
If we divide 3157 by 644, we get 4 and a remainder of 581.
The number 4 becomes the next digit in our result. 
Result so far: 1854.0
The remainder is 581 after subtracting 2576 from 3157.
Append the next digit (7) from the dividend to 581 and continue with: 5817 / 644

Advancing to step 8:
5817 divided by 644 is 9 with a remainder of 21.
Record the quotient 9 as the next digit in the result. 
Result so far: 18549.0
Subtract 5796 from 5817 to get 21.
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 9:
When dividing 210 by 644, we get 0 with a remainder of 210.
Record the quotient 0 as the next digit in the result. 
Result so far: 18549.0
The remainder is 210 after subtracting 0 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

On to step 10:
The number 644 fits into 2100 3 times, leaving a remainder of 168.
The number 3 becomes the next digit in our result. 
Result so far: 18549.03
Subtracting 1932 from 2100 leaves us with 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Going ahead to step 11:
When dividing 1680 by 644, we get 2 with a remainder of 392.
The number 2 becomes the next digit in our result. 
Result so far: 18549.032
The remainder is 392 after subtracting 1288 from 1680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Moving on to step 12:
644 can be fit into 3920 6 times, resulting in a remainder of 56.
Use 6 as the next digit of our solution. 
Result so far: 18549.0326
If we take 3864 away from 3920, we end up with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Step 13:
560 divided by 644 is 0 with a remainder of 560.
The number 0 becomes the next digit in our result. 
Result so far: 18549.0326
Subtracting 0 from 560 leaves us with 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

Step 14:
If we divide 5600 by 644, we get 8 and a remainder of 448.
The next digit of our result is 8. 
Result so far: 18549.032608
If we take 5152 away from 5600, we end up with 448.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4480, and continue the process.

Advancing to step 15:
When dividing 4480 by 644, we get 6 with a remainder of 616.
The next digit of our result is 6. 
Result so far: 18549.0326086
Deduct 3864 from 4480 and we're left with 616.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6160, and continue the process.

Advancing to step 16:
When dividing 6160 by 644, we get 9 with a remainder of 364.
The next digit of our result is 9. 
Result so far: 18549.03260869
If we take 5796 away from 6160, we end up with 364.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3640, and continue the process.

In conclusion, the division gives 18549.03260869 with a balance of 3.64e-07.