We look at the division of 21252472 by 626 
The aim is to understand the frequency of 626 in 21252472.

Moving on to step 1:
If we divide 2 by 626, we get 0 and a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 626

Advancing to step 2:
The number 626 fits into 21 0 times, leaving a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Fetch the next digit (2) from the dividend, attach it to 21 and continue: 212 / 626

Let's proceed to step 3:
626 goes into 212 0 times with 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.
Bring next digit (5) of the dividend behind the 212 and repeat the process: 2125 / 626

Let's proceed to step 4:
When dividing 2125 by 626, we get 3 with a remainder of 247.
The next digit of our result is 3. 
Result so far: 3.0
Subtract 1878 from 2125 to get 247.
Include the next digit (2) from the dividend after 247, then repeat: 2472 / 626

Moving on to step 5:
626 can be fit into 2472 3 times, resulting in a remainder of 594.
The next digit of our result is 3. 
Result so far: 33.0
The remainder is 594 after subtracting 1878 from 2472.
Append the next digit (4) from the dividend to 594 and continue with: 5944 / 626

Going ahead to step 6:
626 goes into 5944 9 times with a remainder of 310.
The number 9 becomes the next digit in our result. 
Result so far: 339.0
Subtract 5634 from 5944 to get 310.
Fetch the next digit (7) from the dividend, attach it to 310 and continue: 3107 / 626

Let's proceed to step 7:
626 can be fit into 3107 4 times, resulting in a remainder of 603.
The number 4 becomes the next digit in our result. 
Result so far: 3394.0
The remainder is 603 after subtracting 2504 from 3107.
Bring next digit (2) of the dividend behind the 603 and repeat the process: 6032 / 626

On to step 8:
626 goes into 6032 9 times with a remainder of 398.
The number 9 becomes the next digit in our result. 
Result so far: 33949.0
Deduct 5634 from 6032 and we're left with 398.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3980, and continue the process.

Going ahead to step 9:
626 can be fit into 3980 6 times, resulting in a remainder of 224.
Write down 6 as next digit of the result. 
Result so far: 33949.6
Deduct 3756 from 3980 and we're left with 224.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

Going ahead to step 10:
626 goes into 2240 3 times with a remainder of 362.
The next digit of our result is 3. 
Result so far: 33949.63
Deduct 1878 from 2240 and we're left with 362.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3620, and continue the process.

On to step 11:
If we divide 3620 by 626, we get 5 and a remainder of 490.
Write down 5 as next digit of the result. 
Result so far: 33949.635
If we subtract 3130 from 3620, we get 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4900, and continue the process.

Let's proceed to step 12:
4900 divided by 626 is 7 with a remainder of 518.
Write down 7 as next digit of the result. 
Result so far: 33949.6357
Deduct 4382 from 4900 and we're left with 518.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5180, and continue the process.

Going ahead to step 13:
5180 divided by 626 is 8 with a remainder of 172.
Record the quotient 8 as the next digit in the result. 
Result so far: 33949.63578
If we subtract 5008 from 5180, we get 172.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1720, and continue the process.

Going ahead to step 14:
When dividing 1720 by 626, we get 2 with a remainder of 468.
The number 2 becomes the next digit in our result. 
Result so far: 33949.635782
The remainder is 468 after subtracting 1252 from 1720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4680, and continue the process.

Advancing to step 15:
When dividing 4680 by 626, we get 7 with a remainder of 298.
The next digit of our result is 7. 
Result so far: 33949.6357827
Subtract 4382 from 4680 to get 298.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2980, and continue the process.

Let's proceed to step 16:
2980 divided by 626 is 4 with a remainder of 476.
Put 4 as the next digit of the answer. 
Result so far: 33949.63578274
If we take 2504 away from 2980, we end up with 476.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4760, and continue the process.

The final outcome is 33949.63578274, with a leftover of 4.76e-07.