We look at the division of 51330744 by 129 
Our goal is to divide 51330744 by 129.

Step 1:
The number 129 fits into 5 0 times, leaving a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 129

Advancing to step 2:
51 divided by 129 is 0 with a remainder of 51.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 51 to get 51.
Fetch the next digit (3) from the dividend, attach it to 51 and continue: 513 / 129

On to step 3:
If we divide 513 by 129, we get 3 and a remainder of 126.
Write down 3 as next digit of the result. 
Result so far: 3.0
Deduct 387 from 513 and we're left with 126.
Append the next digit (3) from the dividend to 126 and continue with: 1263 / 129

Moving on to step 4:
1263 divided by 129 is 9 with a remainder of 102.
The next digit of our result is 9. 
Result so far: 39.0
The remainder is 102 after subtracting 1161 from 1263.
Bring next digit (0) of the dividend behind the 102 and repeat the process: 1020 / 129

Let's proceed to step 5:
1020 divided by 129 is 7 with a remainder of 117.
The number 7 becomes the next digit in our result. 
Result so far: 397.0
If we subtract 903 from 1020, we get 117.
Take the next digit (7) from the dividend and append it to 117, then repeat: 1177 / 129

Moving on to step 6:
When dividing 1177 by 129, we get 9 with a remainder of 16.
The number 9 becomes the next digit in our result. 
Result so far: 3979.0
Subtracting 1161 from 1177 leaves us with 16.
Grab the next digit (4) from the dividend, add it to 16, then carry on: 164 / 129

On to step 7:
129 goes into 164 1 times with a remainder of 35.
Put 1 as the next digit of the answer. 
Result so far: 39791.0
If we subtract 129 from 164, we get 35.
Bring next digit (4) of the dividend behind the 35 and repeat the process: 354 / 129

On to step 8:
When dividing 354 by 129, we get 2 with a remainder of 96.
The next digit of our result is 2. 
Result so far: 397912.0
Deduct 258 from 354 and we're left with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Step 9:
129 goes into 960 7 times with a remainder of 57.
Record the quotient 7 as the next digit in the result. 
Result so far: 397912.7
Deduct 903 from 960 and we're left with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Advancing to step 10:
129 can be fit into 570 4 times, resulting in a remainder of 54.
The number 4 becomes the next digit in our result. 
Result so far: 397912.74
The remainder is 54 after subtracting 516 from 570.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Step 11:
540 divided by 129 is 4 with a remainder of 24.
The number 4 becomes the next digit in our result. 
Result so far: 397912.744
Deduct 516 from 540 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

In conclusion, the division gives 397912.744 with a balance of 0.0024.