We look at the division of 21278240 by 884 
The aim is to understand the frequency of 884 in 21278240.

Let's proceed to step 1:
884 goes into 2 0 times with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 884

Let's proceed to step 2:
The number 884 fits into 21 0 times, leaving a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Grab the next digit (2) from the dividend, add it to 21, then carry on: 212 / 884

Moving on to step 3:
The number 884 fits into 212 0 times, leaving a remainder of 212.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 212 leaves us with 212.
Include the next digit (7) from the dividend after 212, then repeat: 2127 / 884

Moving on to step 4:
When dividing 2127 by 884, we get 2 with a remainder of 359.
The next digit of our result is 2. 
Result so far: 2.0
Subtracting 1768 from 2127 leaves us with 359.
Bring next digit (8) of the dividend behind the 359 and repeat the process: 3598 / 884

Moving on to step 5:
If we divide 3598 by 884, we get 4 and a remainder of 62.
Write down 4 as next digit of the result. 
Result so far: 24.0
If we subtract 3536 from 3598, we get 62.
Append the next digit (2) from the dividend to 62 and continue with: 622 / 884

On to step 6:
If we divide 622 by 884, we get 0 and a remainder of 622.
Record the quotient 0 as the next digit in the result. 
Result so far: 240.0
If we subtract 0 from 622, we get 622.
Grab the next digit (4) from the dividend, add it to 622, then carry on: 6224 / 884

Advancing to step 7:
If we divide 6224 by 884, we get 7 and a remainder of 36.
Record the quotient 7 as the next digit in the result. 
Result so far: 2407.0
Deduct 6188 from 6224 and we're left with 36.
Append the next digit (0) from the dividend to 36 and continue with: 360 / 884

Advancing to step 8:
When dividing 360 by 884, we get 0 with a remainder of 360.
Put 0 as the next digit of the answer. 
Result so far: 24070.0
The remainder is 360 after subtracting 0 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Moving on to step 9:
If we divide 3600 by 884, we get 4 and a remainder of 64.
Record the quotient 4 as the next digit in the result. 
Result so far: 24070.4
Subtracting 3536 from 3600 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

On to step 10:
884 goes into 640 0 times with a remainder of 640.
Write down 0 as next digit of the result. 
Result so far: 24070.4
If we subtract 0 from 640, we get 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Going ahead to step 11:
When dividing 6400 by 884, we get 7 with a remainder of 212.
Record the quotient 7 as the next digit in the result. 
Result so far: 24070.407
Subtracting 6188 from 6400 leaves us with 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

On to step 12:
The number 884 fits into 2120 2 times, leaving a remainder of 352.
Record the quotient 2 as the next digit in the result. 
Result so far: 24070.4072
If we subtract 1768 from 2120, we get 352.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

Step 13:
The number 884 fits into 3520 3 times, leaving a remainder of 868.
Put 3 as the next digit of the answer. 
Result so far: 24070.40723
Deduct 2652 from 3520 and we're left with 868.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8680, and continue the process.

Going ahead to step 14:
884 goes into 8680 9 times with a remainder of 724.
Record the quotient 9 as the next digit in the result. 
Result so far: 24070.407239
If we take 7956 away from 8680, we end up with 724.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7240, and continue the process.

Going ahead to step 15:
884 goes into 7240 8 times with a remainder of 168.
The number 8 becomes the next digit in our result. 
Result so far: 24070.4072398
If we take 7072 away from 7240, we end up with 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Advancing to step 16:
884 can be fit into 1680 1 times, resulting in a remainder of 796.
Use 1 as the next digit of our solution. 
Result so far: 24070.40723981
Deduct 884 from 1680 and we're left with 796.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7960, and continue the process.

The final outcome is 24070.40723981, with a leftover of 7.96e-07.