We look at the division of 21575073 by 584 
The aim is to understand the frequency of 584 in 21575073.

Let's proceed to step 1:
2 divided by 584 is 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 584

Moving on to step 2:
The number 584 fits into 21 0 times, leaving a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Grab the next digit (5) from the dividend, add it to 21, then carry on: 215 / 584

Moving on to step 3:
When dividing 215 by 584, we get 0 with a remainder of 215.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 215 leaves us with 215.
Append the next digit (7) from the dividend to 215 and continue with: 2157 / 584

Let's proceed to step 4:
The number 584 fits into 2157 3 times, leaving a remainder of 405.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we take 1752 away from 2157, we end up with 405.
Bring next digit (5) of the dividend behind the 405 and repeat the process: 4055 / 584

Going ahead to step 5:
584 goes into 4055 6 times with a remainder of 551.
The next digit of our result is 6. 
Result so far: 36.0
If we subtract 3504 from 4055, we get 551.
Take the next digit (0) from the dividend and append it to 551, then repeat: 5510 / 584

Let's proceed to step 6:
5510 divided by 584 is 9 with a remainder of 254.
Record the quotient 9 as the next digit in the result. 
Result so far: 369.0
If we take 5256 away from 5510, we end up with 254.
Append the next digit (7) from the dividend to 254 and continue with: 2547 / 584

Going ahead to step 7:
When dividing 2547 by 584, we get 4 with a remainder of 211.
The next digit of our result is 4. 
Result so far: 3694.0
The remainder is 211 after subtracting 2336 from 2547.
Include the next digit (3) from the dividend after 211, then repeat: 2113 / 584

Let's proceed to step 8:
When dividing 2113 by 584, we get 3 with a remainder of 361.
The next digit of our result is 3. 
Result so far: 36943.0
The remainder is 361 after subtracting 1752 from 2113.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3610, and continue the process.

Advancing to step 9:
584 can be fit into 3610 6 times, resulting in a remainder of 106.
The number 6 becomes the next digit in our result. 
Result so far: 36943.6
Subtracting 3504 from 3610 leaves us with 106.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

Going ahead to step 10:
The number 584 fits into 1060 1 times, leaving a remainder of 476.
Use 1 as the next digit of our solution. 
Result so far: 36943.61
Subtract 584 from 1060 to get 476.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4760, and continue the process.

Let's proceed to step 11:
584 can be fit into 4760 8 times, resulting in a remainder of 88.
The number 8 becomes the next digit in our result. 
Result so far: 36943.618
The remainder is 88 after subtracting 4672 from 4760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Advancing to step 12:
584 can be fit into 880 1 times, resulting in a remainder of 296.
Put 1 as the next digit of the answer. 
Result so far: 36943.6181
If we subtract 584 from 880, we get 296.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2960, and continue the process.

On to step 13:
2960 divided by 584 is 5 with a remainder of 40.
Write down 5 as next digit of the result. 
Result so far: 36943.61815
Subtract 2920 from 2960 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 14:
When dividing 400 by 584, we get 0 with a remainder of 400.
The next digit of our result is 0. 
Result so far: 36943.61815
If we take 0 away from 400, we end up with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Let's proceed to step 15:
The number 584 fits into 4000 6 times, leaving a remainder of 496.
Record the quotient 6 as the next digit in the result. 
Result so far: 36943.6181506
Subtract 3504 from 4000 to get 496.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4960, and continue the process.

Moving on to step 16:
584 goes into 4960 8 times with a remainder of 288.
Write down 8 as next digit of the result. 
Result so far: 36943.61815068
Deduct 4672 from 4960 and we're left with 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

The quotient of the division is 36943.61815068, and the remainder is 2.88e-07.