We look at the division of 21142906 by 647 
The aim is to understand the frequency of 647 in 21142906.

Going ahead to step 1:
647 goes into 2 0 times with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 647

Moving on to step 2:
21 divided by 647 is 0 with a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Include the next digit (1) from the dividend after 21, then repeat: 211 / 647

Moving on to step 3:
647 goes into 211 0 times with a remainder of 211.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 211 after subtracting 0 from 211.
Grab the next digit (4) from the dividend, add it to 211, then carry on: 2114 / 647

Going ahead to step 4:
647 can be fit into 2114 3 times, resulting in a remainder of 173.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtract 1941 from 2114 to get 173.
Bring next digit (2) of the dividend behind the 173 and repeat the process: 1732 / 647

Advancing to step 5:
647 can be fit into 1732 2 times, resulting in a remainder of 438.
Write down 2 as next digit of the result. 
Result so far: 32.0
If we take 1294 away from 1732, we end up with 438.
Grab the next digit (9) from the dividend, add it to 438, then carry on: 4389 / 647

Advancing to step 6:
If we divide 4389 by 647, we get 6 and a remainder of 507.
Write down 6 as next digit of the result. 
Result so far: 326.0
The remainder is 507 after subtracting 3882 from 4389.
Grab the next digit (0) from the dividend, add it to 507, then carry on: 5070 / 647

Let's proceed to step 7:
If we divide 5070 by 647, we get 7 and a remainder of 541.
Put 7 as the next digit of the answer. 
Result so far: 3267.0
If we take 4529 away from 5070, we end up with 541.
Append the next digit (6) from the dividend to 541 and continue with: 5416 / 647

On to step 8:
If we divide 5416 by 647, we get 8 and a remainder of 240.
Write down 8 as next digit of the result. 
Result so far: 32678.0
Subtracting 5176 from 5416 leaves us with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Let's proceed to step 9:
The number 647 fits into 2400 3 times, leaving a remainder of 459.
The number 3 becomes the next digit in our result. 
Result so far: 32678.3
Deduct 1941 from 2400 and we're left with 459.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4590, and continue the process.

Advancing to step 10:
647 goes into 4590 7 times with a remainder of 61.
Write down 7 as next digit of the result. 
Result so far: 32678.37
Deduct 4529 from 4590 and we're left with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Advancing to step 11:
The number 647 fits into 610 0 times, leaving a remainder of 610.
The number 0 becomes the next digit in our result. 
Result so far: 32678.37
Subtracting 0 from 610 leaves us with 610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6100, and continue the process.

On to step 12:
If we divide 6100 by 647, we get 9 and a remainder of 277.
Write down 9 as next digit of the result. 
Result so far: 32678.3709
If we subtract 5823 from 6100, we get 277.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2770, and continue the process.

Advancing to step 13:
The number 647 fits into 2770 4 times, leaving a remainder of 182.
Write down 4 as next digit of the result. 
Result so far: 32678.37094
If we subtract 2588 from 2770, we get 182.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1820, and continue the process.

Advancing to step 14:
647 goes into 1820 2 times with a remainder of 526.
The next digit of our result is 2. 
Result so far: 32678.370942
If we subtract 1294 from 1820, we get 526.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5260, and continue the process.

Step 15:
5260 divided by 647 is 8 with a remainder of 84.
The next digit of our result is 8. 
Result so far: 32678.3709428
Subtracting 5176 from 5260 leaves us with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Going ahead to step 16:
If we divide 840 by 647, we get 1 and a remainder of 193.
Use 1 as the next digit of our solution. 
Result so far: 32678.37094281
Subtract 647 from 840 to get 193.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1930, and continue the process.

In conclusion, the division gives 32678.37094281 with a balance of 1.93e-07.