Let's divide 51689587 by 638
Let's see how many times 638 fits into 51689587.

Moving on to step 1:
When dividing 5 by 638, we get 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 638

Advancing to step 2:
638 goes into 51 0 times with a remainder of 51.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 51 to get 51.
Fetch the next digit (6) from the dividend, attach it to 51 and continue: 516 / 638

Let's proceed to step 3:
If we divide 516 by 638, we get 0 and a remainder of 516.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 516 after subtracting 0 from 516.
Grab the next digit (8) from the dividend, add it to 516, then carry on: 5168 / 638

Going ahead to step 4:
The number 638 fits into 5168 8 times, leaving a remainder of 64.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Subtract 5104 from 5168 to get 64.
Grab the next digit (9) from the dividend, add it to 64, then carry on: 649 / 638

Going ahead to step 5:
638 can be fit into 649 1 times, resulting in a remainder of 11.
The next digit of our result is 1. 
Result so far: 81.0
The remainder is 11 after subtracting 638 from 649.
Grab the next digit (5) from the dividend, add it to 11, then carry on: 115 / 638

On to step 6:
115 divided by 638 is 0 with a remainder of 115.
The number 0 becomes the next digit in our result. 
Result so far: 810.0
Subtracting 0 from 115 leaves us with 115.
Include the next digit (8) from the dividend after 115, then repeat: 1158 / 638

Step 7:
638 can be fit into 1158 1 times, resulting in a remainder of 520.
The next digit of our result is 1. 
Result so far: 8101.0
The remainder is 520 after subtracting 638 from 1158.
Take the next digit (7) from the dividend and append it to 520, then repeat: 5207 / 638

Going ahead to step 8:
638 goes into 5207 8 times with a remainder of 103.
Write down 8 as next digit of the result. 
Result so far: 81018.0
If we take 5104 away from 5207, we end up with 103.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1030, and continue the process.

Going ahead to step 9:
When dividing 1030 by 638, we get 1 with a remainder of 392.
The number 1 becomes the next digit in our result. 
Result so far: 81018.1
Deduct 638 from 1030 and we're left with 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Going ahead to step 10:
638 can be fit into 3920 6 times, resulting in a remainder of 92.
Write down 6 as next digit of the result. 
Result so far: 81018.16
Deduct 3828 from 3920 and we're left with 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Advancing to step 11:
When dividing 920 by 638, we get 1 with a remainder of 282.
Record the quotient 1 as the next digit in the result. 
Result so far: 81018.161
If we take 638 away from 920, we end up with 282.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2820, and continue the process.

On to step 12:
If we divide 2820 by 638, we get 4 and a remainder of 268.
The number 4 becomes the next digit in our result. 
Result so far: 81018.1614
Deduct 2552 from 2820 and we're left with 268.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2680, and continue the process.

Moving on to step 13:
When dividing 2680 by 638, we get 4 with a remainder of 128.
The number 4 becomes the next digit in our result. 
Result so far: 81018.16144
The remainder is 128 after subtracting 2552 from 2680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

In conclusion, the division gives 81018.16144 with a balance of 0.000128.