We divide 65778360 by 644
We want to divide 65778360 by 644.

Advancing to step 1:
When dividing 6 by 644, we get 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Fetch the next digit (5) from the dividend, attach it to 6 and continue: 65 / 644

Let's proceed to step 2:
When dividing 65 by 644, we get 0 with a remainder of 65.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 65 leaves us with 65.
Take the next digit (7) from the dividend and append it to 65, then repeat: 657 / 644

On to step 3:
657 divided by 644 is 1 with a remainder of 13.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 644 from 657 to get 13.
Grab the next digit (7) from the dividend, add it to 13, then carry on: 137 / 644

On to step 4:
137 divided by 644 is 0 with a remainder of 137.
Put 0 as the next digit of the answer. 
Result so far: 10.0
If we subtract 0 from 137, we get 137.
Bring next digit (8) of the dividend behind the 137 and repeat the process: 1378 / 644

Step 5:
644 goes into 1378 2 times with a remainder of 90.
Use 2 as the next digit of our solution. 
Result so far: 102.0
The remainder is 90 after subtracting 1288 from 1378.
Include the next digit (3) from the dividend after 90, then repeat: 903 / 644

Moving on to step 6:
When dividing 903 by 644, we get 1 with a remainder of 259.
The number 1 becomes the next digit in our result. 
Result so far: 1021.0
If we take 644 away from 903, we end up with 259.
Append the next digit (6) from the dividend to 259 and continue with: 2596 / 644

Let's proceed to step 7:
644 can be fit into 2596 4 times, resulting in a remainder of 20.
The next digit of our result is 4. 
Result so far: 10214.0
If we subtract 2576 from 2596, we get 20.
Take the next digit (0) from the dividend and append it to 20, then repeat: 200 / 644

Step 8:
200 divided by 644 is 0 with a remainder of 200.
The next digit of our result is 0. 
Result so far: 102140.0
If we subtract 0 from 200, we get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

On to step 9:
The number 644 fits into 2000 3 times, leaving a remainder of 68.
The next digit of our result is 3. 
Result so far: 102140.3
The remainder is 68 after subtracting 1932 from 2000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

On to step 10:
The number 644 fits into 680 1 times, leaving a remainder of 36.
The next digit of our result is 1. 
Result so far: 102140.31
Subtract 644 from 680 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 11:
644 goes into 360 0 times with a remainder of 360.
Record the quotient 0 as the next digit in the result. 
Result so far: 102140.31
Subtract 0 from 360 to get 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Moving on to step 12:
When dividing 3600 by 644, we get 5 with a remainder of 380.
Use 5 as the next digit of our solution. 
Result so far: 102140.3105
If we subtract 3220 from 3600, we get 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Let's proceed to step 13:
644 can be fit into 3800 5 times, resulting in a remainder of 580.
Put 5 as the next digit of the answer. 
Result so far: 102140.31055
Subtract 3220 from 3800 to get 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

Our division results in 102140.31055 with a remaining 0.00058.