We look at the division of 21816735 by 879 
We want to figure out the number of times 21816735 can be divided by 879.

Advancing to step 1:
879 goes into 2 0 times with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 879

Advancing to step 2:
If we divide 21 by 879, we get 0 and a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Append the next digit (8) from the dividend to 21 and continue with: 218 / 879

On to step 3:
879 goes into 218 0 times with a remainder of 218.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 218 leaves us with 218.
Take the next digit (1) from the dividend and append it to 218, then repeat: 2181 / 879

Moving on to step 4:
If we divide 2181 by 879, we get 2 and a remainder of 423.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we take 1758 away from 2181, we end up with 423.
Append the next digit (6) from the dividend to 423 and continue with: 4236 / 879

Moving on to step 5:
879 can be fit into 4236 4 times, resulting in a remainder of 720.
The number 4 becomes the next digit in our result. 
Result so far: 24.0
The remainder is 720 after subtracting 3516 from 4236.
Take the next digit (7) from the dividend and append it to 720, then repeat: 7207 / 879

On to step 6:
879 goes into 7207 8 times with a remainder of 175.
Put 8 as the next digit of the answer. 
Result so far: 248.0
If we take 7032 away from 7207, we end up with 175.
Grab the next digit (3) from the dividend, add it to 175, then carry on: 1753 / 879

Advancing to step 7:
When dividing 1753 by 879, we get 1 with a remainder of 874.
Write down 1 as next digit of the result. 
Result so far: 2481.0
If we subtract 879 from 1753, we get 874.
Fetch the next digit (5) from the dividend, attach it to 874 and continue: 8745 / 879

Let's proceed to step 8:
879 goes into 8745 9 times with a remainder of 834.
The next digit of our result is 9. 
Result so far: 24819.0
If we take 7911 away from 8745, we end up with 834.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8340, and continue the process.

Going ahead to step 9:
If we divide 8340 by 879, we get 9 and a remainder of 429.
The next digit of our result is 9. 
Result so far: 24819.9
If we take 7911 away from 8340, we end up with 429.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4290, and continue the process.

On to step 10:
879 can be fit into 4290 4 times, resulting in a remainder of 774.
Put 4 as the next digit of the answer. 
Result so far: 24819.94
The remainder is 774 after subtracting 3516 from 4290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7740, and continue the process.

Advancing to step 11:
When dividing 7740 by 879, we get 8 with a remainder of 708.
Put 8 as the next digit of the answer. 
Result so far: 24819.948
Subtracting 7032 from 7740 leaves us with 708.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7080, and continue the process.

Advancing to step 12:
879 goes into 7080 8 times with a remainder of 48.
Record the quotient 8 as the next digit in the result. 
Result so far: 24819.9488
Subtracting 7032 from 7080 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Our division results in 24819.9488 with a remaining 0.00048.