49427440 divided by 644 
We want to figure out the number of times 49427440 can be divided by 644.

Step 1:
644 goes into 4 0 times with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Fetch the next digit (9) from the dividend, attach it to 4 and continue: 49 / 644

Let's proceed to step 2:
644 can be fit into 49 0 times, resulting in a remainder of 49.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 49 to get 49.
Grab the next digit (4) from the dividend, add it to 49, then carry on: 494 / 644

Step 3:
The number 644 fits into 494 0 times, leaving a remainder of 494.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 494, we get 494.
Include the next digit (2) from the dividend after 494, then repeat: 4942 / 644

Going ahead to step 4:
644 goes into 4942 7 times with a remainder of 434.
Write down 7 as next digit of the result. 
Result so far: 7.0
The remainder is 434 after subtracting 4508 from 4942.
Include the next digit (7) from the dividend after 434, then repeat: 4347 / 644

On to step 5:
644 can be fit into 4347 6 times, resulting in a remainder of 483.
Use 6 as the next digit of our solution. 
Result so far: 76.0
If we take 3864 away from 4347, we end up with 483.
Append the next digit (4) from the dividend to 483 and continue with: 4834 / 644

Let's proceed to step 6:
644 can be fit into 4834 7 times, resulting in a remainder of 326.
Put 7 as the next digit of the answer. 
Result so far: 767.0
If we subtract 4508 from 4834, we get 326.
Include the next digit (4) from the dividend after 326, then repeat: 3264 / 644

On to step 7:
When dividing 3264 by 644, we get 5 with a remainder of 44.
Put 5 as the next digit of the answer. 
Result so far: 7675.0
Deduct 3220 from 3264 and we're left with 44.
Take the next digit (0) from the dividend and append it to 44, then repeat: 440 / 644

Let's proceed to step 8:
If we divide 440 by 644, we get 0 and a remainder of 440.
Write down 0 as next digit of the result. 
Result so far: 76750.0
If we take 0 away from 440, we end up with 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Let's proceed to step 9:
If we divide 4400 by 644, we get 6 and a remainder of 536.
Use 6 as the next digit of our solution. 
Result so far: 76750.6
Subtracting 3864 from 4400 leaves us with 536.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5360, and continue the process.

On to step 10:
The number 644 fits into 5360 8 times, leaving a remainder of 208.
The next digit of our result is 8. 
Result so far: 76750.68
Deduct 5152 from 5360 and we're left with 208.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

On to step 11:
The number 644 fits into 2080 3 times, leaving a remainder of 148.
Put 3 as the next digit of the answer. 
Result so far: 76750.683
The remainder is 148 after subtracting 1932 from 2080.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

Step 12:
When dividing 1480 by 644, we get 2 with a remainder of 192.
Record the quotient 2 as the next digit in the result. 
Result so far: 76750.6832
If we subtract 1288 from 1480, we get 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

Let's proceed to step 13:
644 can be fit into 1920 2 times, resulting in a remainder of 632.
Write down 2 as next digit of the result. 
Result so far: 76750.68322
Deduct 1288 from 1920 and we're left with 632.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6320, and continue the process.

Our division results in 76750.68322 with a remaining 0.000632.