We're dividing 21818328 by 879 
The aim is to understand the frequency of 879 in 21818328.

Advancing to step 1:
The number 879 fits into 2 0 times, leaving a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 879

On to step 2:
If we divide 21 by 879, we get 0 and a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Take the next digit (8) from the dividend and append it to 21, then repeat: 218 / 879

Going ahead to step 3:
879 can be fit into 218 0 times, resulting in a remainder of 218.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 218, we end up with 218.
Append the next digit (1) from the dividend to 218 and continue with: 2181 / 879

Moving on to step 4:
2181 divided by 879 is 2 with a remainder of 423.
The next digit of our result is 2. 
Result so far: 2.0
Subtracting 1758 from 2181 leaves us with 423.
Grab the next digit (8) from the dividend, add it to 423, then carry on: 4238 / 879

Moving on to step 5:
If we divide 4238 by 879, we get 4 and a remainder of 722.
The number 4 becomes the next digit in our result. 
Result so far: 24.0
If we take 3516 away from 4238, we end up with 722.
Include the next digit (3) from the dividend after 722, then repeat: 7223 / 879

Moving on to step 6:
879 can be fit into 7223 8 times, resulting in a remainder of 191.
Write down 8 as next digit of the result. 
Result so far: 248.0
If we take 7032 away from 7223, we end up with 191.
Append the next digit (2) from the dividend to 191 and continue with: 1912 / 879

Advancing to step 7:
879 can be fit into 1912 2 times, resulting in a remainder of 154.
Write down 2 as next digit of the result. 
Result so far: 2482.0
If we take 1758 away from 1912, we end up with 154.
Take the next digit (8) from the dividend and append it to 154, then repeat: 1548 / 879

Step 8:
1548 divided by 879 is 1 with a remainder of 669.
Use 1 as the next digit of our solution. 
Result so far: 24821.0
If we take 879 away from 1548, we end up with 669.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6690, and continue the process.

Step 9:
If we divide 6690 by 879, we get 7 and a remainder of 537.
The next digit of our result is 7. 
Result so far: 24821.7
If we take 6153 away from 6690, we end up with 537.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5370, and continue the process.

Let's proceed to step 10:
When dividing 5370 by 879, we get 6 with a remainder of 96.
The number 6 becomes the next digit in our result. 
Result so far: 24821.76
Subtract 5274 from 5370 to get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Advancing to step 11:
The number 879 fits into 960 1 times, leaving a remainder of 81.
Write down 1 as next digit of the result. 
Result so far: 24821.761
The remainder is 81 after subtracting 879 from 960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Step 12:
879 can be fit into 810 0 times, resulting in a remainder of 810.
Write down 0 as next digit of the result. 
Result so far: 24821.761
Subtracting 0 from 810 leaves us with 810.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8100, and continue the process.

On to step 13:
879 goes into 8100 9 times with a remainder of 189.
The number 9 becomes the next digit in our result. 
Result so far: 24821.76109
The remainder is 189 after subtracting 7911 from 8100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1890, and continue the process.

Advancing to step 14:
When dividing 1890 by 879, we get 2 with a remainder of 132.
Write down 2 as next digit of the result. 
Result so far: 24821.761092
The remainder is 132 after subtracting 1758 from 1890.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

Moving on to step 15:
The number 879 fits into 1320 1 times, leaving a remainder of 441.
Write down 1 as next digit of the result. 
Result so far: 24821.7610921
If we take 879 away from 1320, we end up with 441.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4410, and continue the process.

Moving on to step 16:
If we divide 4410 by 879, we get 5 and a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 24821.76109215
Subtracting 4395 from 4410 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

After the division, we end up with 24821.76109215 and a remainder of 1.5e-08.