Let's divide 51510880 by 438
We're looking to find how many times 438 goes into 51510880.

Step 1:
When dividing 5 by 438, 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.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 438

Going ahead to step 2:
When dividing 51 by 438, we get 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 (5) from the dividend, attach it to 51 and continue: 515 / 438

On to step 3:
438 goes into 515 1 times with a remainder of 77.
The next digit of our result is 1. 
Result so far: 1.0
If we take 438 away from 515, we end up with 77.
Append the next digit (1) from the dividend to 77 and continue with: 771 / 438

Advancing to step 4:
771 divided by 438 is 1 with a remainder of 333.
Put 1 as the next digit of the answer. 
Result so far: 11.0
Subtract 438 from 771 to get 333.
Include the next digit (0) from the dividend after 333, then repeat: 3330 / 438

Step 5:
When dividing 3330 by 438, we get 7 with a remainder of 264.
Use 7 as the next digit of our solution. 
Result so far: 117.0
If we take 3066 away from 3330, we end up with 264.
Include the next digit (8) from the dividend after 264, then repeat: 2648 / 438

Step 6:
When dividing 2648 by 438, we get 6 with a remainder of 20.
Write down 6 as next digit of the result. 
Result so far: 1176.0
Deduct 2628 from 2648 and we're left with 20.
Append the next digit (8) from the dividend to 20 and continue with: 208 / 438

Let's proceed to step 7:
438 can be fit into 208 0 times, resulting in a remainder of 208.
Put 0 as the next digit of the answer. 
Result so far: 11760.0
The remainder is 208 after subtracting 0 from 208.
Append the next digit (0) from the dividend to 208 and continue with: 2080 / 438

Advancing to step 8:
438 can be fit into 2080 4 times, resulting in a remainder of 328.
Write down 4 as next digit of the result. 
Result so far: 117604.0
Subtracting 1752 from 2080 leaves us with 328.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3280, and continue the process.

Moving on to step 9:
438 can be fit into 3280 7 times, resulting in a remainder of 214.
The next digit of our result is 7. 
Result so far: 117604.7
If we take 3066 away from 3280, we end up with 214.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2140, and continue the process.

On to step 10:
438 can be fit into 2140 4 times, resulting in a remainder of 388.
Put 4 as the next digit of the answer. 
Result so far: 117604.74
Subtract 1752 from 2140 to get 388.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3880, and continue the process.

Advancing to step 11:
If we divide 3880 by 438, we get 8 and a remainder of 376.
Write down 8 as next digit of the result. 
Result so far: 117604.748
The remainder is 376 after subtracting 3504 from 3880.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3760, and continue the process.

On to step 12:
When dividing 3760 by 438, we get 8 with a remainder of 256.
The number 8 becomes the next digit in our result. 
Result so far: 117604.7488
Subtract 3504 from 3760 to get 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

Our division results in 117604.7488 with a remaining 0.00256.