65038124 ÷ 644 
We want to divide 65038124 by 644.

Let's proceed to step 1:
644 goes into 6 0 times with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Bring next digit (5) of the dividend behind the 6 and repeat the process: 65 / 644

Step 2:
644 can be fit into 65 0 times, resulting in a remainder of 65.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 65, we get 65.
Include the next digit (0) from the dividend after 65, then repeat: 650 / 644

Step 3:
If we divide 650 by 644, we get 1 and a remainder of 6.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 644 away from 650, we end up with 6.
Grab the next digit (3) from the dividend, add it to 6, then carry on: 63 / 644

Let's proceed to step 4:
The number 644 fits into 63 0 times, leaving a remainder of 63.
Write down 0 as next digit of the result. 
Result so far: 10.0
If we subtract 0 from 63, we get 63.
Include the next digit (8) from the dividend after 63, then repeat: 638 / 644

Advancing to step 5:
If we divide 638 by 644, we get 0 and a remainder of 638.
Record the quotient 0 as the next digit in the result. 
Result so far: 100.0
Deduct 0 from 638 and we're left with 638.
Bring next digit (1) of the dividend behind the 638 and repeat the process: 6381 / 644

Let's proceed to step 6:
644 can be fit into 6381 9 times, resulting in a remainder of 585.
Record the quotient 9 as the next digit in the result. 
Result so far: 1009.0
Subtract 5796 from 6381 to get 585.
Take the next digit (2) from the dividend and append it to 585, then repeat: 5852 / 644

Moving on to step 7:
644 goes into 5852 9 times with a remainder of 56.
Use 9 as the next digit of our solution. 
Result so far: 10099.0
Subtract 5796 from 5852 to get 56.
Append the next digit (4) from the dividend to 56 and continue with: 564 / 644

Step 8:
564 divided by 644 is 0 with a remainder of 564.
The next digit of our result is 0. 
Result so far: 100990.0
If we subtract 0 from 564, 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.

Advancing to step 9:
If we divide 5640 by 644, we get 8 and a remainder of 488.
Put 8 as the next digit of the answer. 
Result so far: 100990.8
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.

Advancing to step 10:
When dividing 4880 by 644, we get 7 with a remainder of 372.
The next digit of our result is 7. 
Result so far: 100990.87
If we take 4508 away from 4880, we end up with 372.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

Let's proceed to step 11:
The number 644 fits into 3720 5 times, leaving a remainder of 500.
Write down 5 as next digit of the result. 
Result so far: 100990.875
If we take 3220 away from 3720, we end up with 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

Let's proceed to step 12:
644 goes into 5000 7 times with a remainder of 492.
Use 7 as the next digit of our solution. 
Result so far: 100990.8757
Subtracting 4508 from 5000 leaves us with 492.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4920, and continue the process.

Going ahead to step 13:
644 goes into 4920 7 times with a remainder of 412.
Record the quotient 7 as the next digit in the result. 
Result so far: 100990.87577
The remainder is 412 after subtracting 4508 from 4920.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4120, and continue the process.

In conclusion, the division gives 100990.87577 with a balance of 0.000412.