51002732 divided by 644 
We want to figure out the number of times 51002732 can be divided by 644.

On to step 1:
When dividing 5 by 644, we get 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 644

Going ahead to step 2:
644 can be fit into 51 0 times, resulting in a remainder of 51.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 51, we get 51.
Bring next digit (0) of the dividend behind the 51 and repeat the process: 510 / 644

Moving on to step 3:
When dividing 510 by 644, we get 0 with a remainder of 510.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 510 to get 510.
Take the next digit (0) from the dividend and append it to 510, then repeat: 5100 / 644

Advancing to step 4:
When dividing 5100 by 644, we get 7 with a remainder of 592.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Deduct 4508 from 5100 and we're left with 592.
Fetch the next digit (2) from the dividend, attach it to 592 and continue: 5922 / 644

Let's proceed to step 5:
When dividing 5922 by 644, we get 9 with a remainder of 126.
Use 9 as the next digit of our solution. 
Result so far: 79.0
If we subtract 5796 from 5922, we get 126.
Fetch the next digit (7) from the dividend, attach it to 126 and continue: 1267 / 644

Step 6:
1267 divided by 644 is 1 with a remainder of 623.
Record the quotient 1 as the next digit in the result. 
Result so far: 791.0
Deduct 644 from 1267 and we're left with 623.
Bring next digit (3) of the dividend behind the 623 and repeat the process: 6233 / 644

Advancing to step 7:
644 can be fit into 6233 9 times, resulting in a remainder of 437.
Use 9 as the next digit of our solution. 
Result so far: 7919.0
If we subtract 5796 from 6233, we get 437.
Include the next digit (2) from the dividend after 437, then repeat: 4372 / 644

Going ahead to step 8:
644 goes into 4372 6 times with a remainder of 508.
Use 6 as the next digit of our solution. 
Result so far: 79196.0
Subtracting 3864 from 4372 leaves us with 508.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5080, and continue the process.

Let's proceed to step 9:
When dividing 5080 by 644, we get 7 with a remainder of 572.
The next digit of our result is 7. 
Result so far: 79196.7
Subtracting 4508 from 5080 leaves us with 572.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5720, and continue the process.

On to step 10:
If we divide 5720 by 644, we get 8 and a remainder of 568.
The number 8 becomes the next digit in our result. 
Result so far: 79196.78
The remainder is 568 after subtracting 5152 from 5720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5680, and continue the process.

Moving on to step 11:
644 can be fit into 5680 8 times, resulting in a remainder of 528.
The next digit of our result is 8. 
Result so far: 79196.788
If we take 5152 away from 5680, we end up with 528.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5280, and continue the process.

In conclusion, the division gives 79196.788 with a balance of 0.0528.