58232121 ÷ 647 
The aim is to understand the frequency of 647 in 58232121.

On to step 1:
5 divided by 647 is 0 with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Grab the next digit (8) from the dividend, add it to 5, then carry on: 58 / 647

Moving on to step 2:
647 goes into 58 0 times with a remainder of 58.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 58 after subtracting 0 from 58.
Include the next digit (2) from the dividend after 58, then repeat: 582 / 647

Going ahead to step 3:
582 divided by 647 is 0 with a remainder of 582.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 582, we end up with 582.
Bring next digit (3) of the dividend behind the 582 and repeat the process: 5823 / 647

Step 4:
5823 divided by 647 is 9 with a remainder of 0.
The next digit of our result is 9. 
Result so far: 9.0
Subtracting 5823 from 5823 leaves us with 0.
Append the next digit (2) from the dividend to 0 and continue with: 2 / 647

Moving on to step 5:
The number 647 fits into 2 0 times, leaving a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 90.0
If we take 0 away from 2, we end up with 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 647

Let's proceed to step 6:
When dividing 21 by 647, we get 0 with a remainder of 21.
The next digit of our result is 0. 
Result so far: 900.0
The remainder is 21 after subtracting 0 from 21.
Bring next digit (2) of the dividend behind the 21 and repeat the process: 212 / 647

Advancing to step 7:
The number 647 fits into 212 0 times, leaving a remainder of 212.
Write down 0 as next digit of the result. 
Result so far: 9000.0
Subtract 0 from 212 to get 212.
Take the next digit (1) from the dividend and append it to 212, then repeat: 2121 / 647

Moving on to step 8:
If we divide 2121 by 647, we get 3 and a remainder of 180.
The number 3 becomes the next digit in our result. 
Result so far: 90003.0
If we subtract 1941 from 2121, we get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Moving on to step 9:
When dividing 1800 by 647, we get 2 with a remainder of 506.
Put 2 as the next digit of the answer. 
Result so far: 90003.2
Subtracting 1294 from 1800 leaves us with 506.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5060, and continue the process.

Advancing to step 10:
647 goes into 5060 7 times with a remainder of 531.
Record the quotient 7 as the next digit in the result. 
Result so far: 90003.27
Subtracting 4529 from 5060 leaves us with 531.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5310, and continue the process.

Step 11:
The number 647 fits into 5310 8 times, leaving a remainder of 134.
The number 8 becomes the next digit in our result. 
Result so far: 90003.278
If we take 5176 away from 5310, we end up with 134.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1340, and continue the process.

Advancing to step 12:
1340 divided by 647 is 2 with a remainder of 46.
Write down 2 as next digit of the result. 
Result so far: 90003.2782
Subtracting 1294 from 1340 leaves us with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

On to step 13:
460 divided by 647 is 0 with a remainder of 460.
Write down 0 as next digit of the result. 
Result so far: 90003.2782
The remainder is 460 after subtracting 0 from 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

Moving on to step 14:
The number 647 fits into 4600 7 times, leaving a remainder of 71.
The next digit of our result is 7. 
Result so far: 90003.278207
If we take 4529 away from 4600, we end up with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Let's proceed to step 15:
If we divide 710 by 647, we get 1 and a remainder of 63.
Write down 1 as next digit of the result. 
Result so far: 90003.2782071
Subtract 647 from 710 to get 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Step 16:
When dividing 630 by 647, we get 0 with a remainder of 630.
Write down 0 as next digit of the result. 
Result so far: 90003.2782071
Deduct 0 from 630 and we're left with 630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6300, and continue the process.

Our division results in 90003.2782071 with a remaining 6.3e-07.