We look at the division of 42912590 by 876 
Our goal is to divide 42912590 by 876.

Moving on to step 1:
The number 876 fits into 4 0 times, leaving a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 876

Advancing to step 2:
876 can be fit into 42 0 times, resulting in a remainder of 42.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 42 leaves us with 42.
Take the next digit (9) from the dividend and append it to 42, then repeat: 429 / 876

Going ahead to step 3:
If we divide 429 by 876, we get 0 and a remainder of 429.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 429 after subtracting 0 from 429.
Include the next digit (1) from the dividend after 429, then repeat: 4291 / 876

On to step 4:
If we divide 4291 by 876, we get 4 and a remainder of 787.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we take 3504 away from 4291, we end up with 787.
Grab the next digit (2) from the dividend, add it to 787, then carry on: 7872 / 876

Advancing to step 5:
When dividing 7872 by 876, we get 8 with a remainder of 864.
Put 8 as the next digit of the answer. 
Result so far: 48.0
Deduct 7008 from 7872 and we're left with 864.
Grab the next digit (5) from the dividend, add it to 864, then carry on: 8645 / 876

On to step 6:
876 can be fit into 8645 9 times, resulting in a remainder of 761.
The number 9 becomes the next digit in our result. 
Result so far: 489.0
The remainder is 761 after subtracting 7884 from 8645.
Include the next digit (9) from the dividend after 761, then repeat: 7619 / 876

Going ahead to step 7:
When dividing 7619 by 876, we get 8 with a remainder of 611.
The next digit of our result is 8. 
Result so far: 4898.0
If we take 7008 away from 7619, we end up with 611.
Grab the next digit (0) from the dividend, add it to 611, then carry on: 6110 / 876

Going ahead to step 8:
When dividing 6110 by 876, we get 6 with a remainder of 854.
Put 6 as the next digit of the answer. 
Result so far: 48986.0
Subtract 5256 from 6110 to get 854.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8540, and continue the process.

Let's proceed to step 9:
8540 divided by 876 is 9 with a remainder of 656.
The number 9 becomes the next digit in our result. 
Result so far: 48986.9
Subtract 7884 from 8540 to get 656.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6560, and continue the process.

Moving on to step 10:
6560 divided by 876 is 7 with a remainder of 428.
Write down 7 as next digit of the result. 
Result so far: 48986.97
If we take 6132 away from 6560, we end up with 428.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4280, and continue the process.

Moving on to step 11:
If we divide 4280 by 876, we get 4 and a remainder of 776.
Use 4 as the next digit of our solution. 
Result so far: 48986.974
If we subtract 3504 from 4280, we get 776.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7760, and continue the process.

On to step 12:
7760 divided by 876 is 8 with a remainder of 752.
The next digit of our result is 8. 
Result so far: 48986.9748
Subtract 7008 from 7760 to get 752.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7520, and continue the process.

On to step 13:
876 goes into 7520 8 times with a remainder of 512.
Record the quotient 8 as the next digit in the result. 
Result so far: 48986.97488
Subtracting 7008 from 7520 leaves us with 512.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5120, and continue the process.

The final outcome is 48986.97488, with a leftover of 0.000512.