Let's divide 21590648 by 888
The aim is to understand the frequency of 888 in 21590648.

Step 1:
When dividing 2 by 888, we get 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 888

Moving on to step 2:
21 divided by 888 is 0 with a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 21 to get 21.
Append the next digit (5) from the dividend to 21 and continue with: 215 / 888

Advancing to step 3:
If we divide 215 by 888, we get 0 and a remainder of 215.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 215, we end up with 215.
Bring next digit (9) of the dividend behind the 215 and repeat the process: 2159 / 888

Step 4:
The number 888 fits into 2159 2 times, leaving a remainder of 383.
Write down 2 as next digit of the result. 
Result so far: 2.0
The remainder is 383 after subtracting 1776 from 2159.
Append the next digit (0) from the dividend to 383 and continue with: 3830 / 888

Step 5:
When dividing 3830 by 888, we get 4 with a remainder of 278.
The number 4 becomes the next digit in our result. 
Result so far: 24.0
The remainder is 278 after subtracting 3552 from 3830.
Include the next digit (6) from the dividend after 278, then repeat: 2786 / 888

On to step 6:
If we divide 2786 by 888, we get 3 and a remainder of 122.
Write down 3 as next digit of the result. 
Result so far: 243.0
If we take 2664 away from 2786, we end up with 122.
Include the next digit (4) from the dividend after 122, then repeat: 1224 / 888

Moving on to step 7:
If we divide 1224 by 888, we get 1 and a remainder of 336.
Record the quotient 1 as the next digit in the result. 
Result so far: 2431.0
If we take 888 away from 1224, we end up with 336.
Bring next digit (8) of the dividend behind the 336 and repeat the process: 3368 / 888

Advancing to step 8:
888 goes into 3368 3 times with a remainder of 704.
Put 3 as the next digit of the answer. 
Result so far: 24313.0
The remainder is 704 after subtracting 2664 from 3368.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7040, and continue the process.

Moving on to step 9:
If we divide 7040 by 888, we get 7 and a remainder of 824.
Use 7 as the next digit of our solution. 
Result so far: 24313.7
Deduct 6216 from 7040 and we're left with 824.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8240, and continue the process.

Moving on to step 10:
888 can be fit into 8240 9 times, resulting in a remainder of 248.
The number 9 becomes the next digit in our result. 
Result so far: 24313.79
Subtract 7992 from 8240 to get 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Advancing to step 11:
888 goes into 2480 2 times with a remainder of 704.
The next digit of our result is 2. 
Result so far: 24313.792
Subtract 1776 from 2480 to get 704.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7040, and continue the process.

Step 12:
888 goes into 7040 7 times with a remainder of 824.
Record the quotient 7 as the next digit in the result. 
Result so far: 24313.7927
If we subtract 6216 from 7040, we get 824.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8240, and continue the process.

Advancing to step 13:
When dividing 8240 by 888, we get 9 with a remainder of 248.
Use 9 as the next digit of our solution. 
Result so far: 24313.79279
The remainder is 248 after subtracting 7992 from 8240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

On to step 14:
The number 888 fits into 2480 2 times, leaving a remainder of 704.
Use 2 as the next digit of our solution. 
Result so far: 24313.792792
If we take 1776 away from 2480, we end up with 704.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7040, and continue the process.

Step 15:
7040 divided by 888 is 7 with a remainder of 824.
The next digit of our result is 7. 
Result so far: 24313.7927927
Deduct 6216 from 7040 and we're left with 824.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8240, and continue the process.

Step 16:
8240 divided by 888 is 9 with a remainder of 248.
Record the quotient 9 as the next digit in the result. 
Result so far: 24313.79279279
Subtracting 7992 from 8240 leaves us with 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Our division results in 24313.79279279 with a remaining 2.48e-07.