10887456 divided by 644 
We're looking to find how many times 644 goes into 10887456.

Moving on to step 1:
1 divided by 644 is 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 644

On to step 2:
644 goes into 10 0 times with a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 10, we get 10.
Fetch the next digit (8) from the dividend, attach it to 10 and continue: 108 / 644

Advancing to step 3:
644 can be fit into 108 0 times, resulting in a remainder of 108.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 108 leaves us with 108.
Take the next digit (8) from the dividend and append it to 108, then repeat: 1088 / 644

Moving on to step 4:
644 can be fit into 1088 1 times, resulting in a remainder of 444.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 444 after subtracting 644 from 1088.
Append the next digit (7) from the dividend to 444 and continue with: 4447 / 644

Going ahead to step 5:
The number 644 fits into 4447 6 times, leaving a remainder of 583.
Use 6 as the next digit of our solution. 
Result so far: 16.0
Subtracting 3864 from 4447 leaves us with 583.
Bring next digit (4) of the dividend behind the 583 and repeat the process: 5834 / 644

Going ahead to step 6:
644 goes into 5834 9 times with a remainder of 38.
The number 9 becomes the next digit in our result. 
Result so far: 169.0
If we subtract 5796 from 5834, we get 38.
Take the next digit (5) from the dividend and append it to 38, then repeat: 385 / 644

Step 7:
644 can be fit into 385 0 times, resulting in a remainder of 385.
Write down 0 as next digit of the result. 
Result so far: 1690.0
Deduct 0 from 385 and we're left with 385.
Include the next digit (6) from the dividend after 385, then repeat: 3856 / 644

Let's proceed to step 8:
If we divide 3856 by 644, we get 5 and a remainder of 636.
Use 5 as the next digit of our solution. 
Result so far: 16905.0
The remainder is 636 after subtracting 3220 from 3856.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6360, and continue the process.

Let's proceed to step 9:
6360 divided by 644 is 9 with a remainder of 564.
Record the quotient 9 as the next digit in the result. 
Result so far: 16905.9
If we subtract 5796 from 6360, we get 564.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5640, and continue the process.

On to step 10:
The number 644 fits into 5640 8 times, leaving a remainder of 488.
Write down 8 as next digit of the result. 
Result so far: 16905.98
If we subtract 5152 from 5640, we get 488.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4880, and continue the process.

Step 11:
The number 644 fits into 4880 7 times, leaving a remainder of 372.
Use 7 as the next digit of our solution. 
Result so far: 16905.987
Subtract 4508 from 4880 to get 372.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

Step 12:
When dividing 3720 by 644, we get 5 with a remainder of 500.
The number 5 becomes the next digit in our result. 
Result so far: 16905.9875
The remainder is 500 after subtracting 3220 from 3720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

Step 13:
If we divide 5000 by 644, we get 7 and a remainder of 492.
Write down 7 as next digit of the result. 
Result so far: 16905.98757
The remainder is 492 after subtracting 4508 from 5000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4920, and continue the process.

Let's proceed to step 14:
644 goes into 4920 7 times with a remainder of 412.
Use 7 as the next digit of our solution. 
Result so far: 16905.987577
Subtracting 4508 from 4920 leaves us with 412.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4120, and continue the process.

Our division results in 16905.987577 with a remaining 4.12e-05.