Let's divide 21664039 by 712
The aim is to understand the frequency of 712 in 21664039.

Advancing to step 1:
712 can be fit into 2 0 times, resulting in a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 712

On to step 2:
21 divided by 712 is 0 with a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 21 to get 21.
Append the next digit (6) from the dividend to 21 and continue with: 216 / 712

Advancing to step 3:
712 can be fit into 216 0 times, resulting in a remainder of 216.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 216 and we're left with 216.
Append the next digit (6) from the dividend to 216 and continue with: 2166 / 712

On to step 4:
If we divide 2166 by 712, we get 3 and a remainder of 30.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
The remainder is 30 after subtracting 2136 from 2166.
Bring next digit (4) of the dividend behind the 30 and repeat the process: 304 / 712

Step 5:
712 goes into 304 0 times with a remainder of 304.
Write down 0 as next digit of the result. 
Result so far: 30.0
Deduct 0 from 304 and we're left with 304.
Grab the next digit (0) from the dividend, add it to 304, then carry on: 3040 / 712

Moving on to step 6:
3040 divided by 712 is 4 with a remainder of 192.
Use 4 as the next digit of our solution. 
Result so far: 304.0
If we subtract 2848 from 3040, we get 192.
Grab the next digit (3) from the dividend, add it to 192, then carry on: 1923 / 712

Step 7:
712 can be fit into 1923 2 times, resulting in a remainder of 499.
Write down 2 as next digit of the result. 
Result so far: 3042.0
If we subtract 1424 from 1923, we get 499.
Include the next digit (9) from the dividend after 499, then repeat: 4999 / 712

Going ahead to step 8:
When dividing 4999 by 712, we get 7 with a remainder of 15.
Use 7 as the next digit of our solution. 
Result so far: 30427.0
Subtracting 4984 from 4999 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 9:
When dividing 150 by 712, we get 0 with a remainder of 150.
Use 0 as the next digit of our solution. 
Result so far: 30427.0
The remainder is 150 after subtracting 0 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Step 10:
When dividing 1500 by 712, we get 2 with a remainder of 76.
The number 2 becomes the next digit in our result. 
Result so far: 30427.02
If we take 1424 away from 1500, we end up with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Step 11:
If we divide 760 by 712, we get 1 and a remainder of 48.
The next digit of our result is 1. 
Result so far: 30427.021
Deduct 712 from 760 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 12:
480 divided by 712 is 0 with a remainder of 480.
The number 0 becomes the next digit in our result. 
Result so far: 30427.021
Deduct 0 from 480 and we're left with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

On to step 13:
712 can be fit into 4800 6 times, resulting in a remainder of 528.
The number 6 becomes the next digit in our result. 
Result so far: 30427.02106
Subtracting 4272 from 4800 leaves us with 528.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5280, and continue the process.

On to step 14:
If we divide 5280 by 712, we get 7 and a remainder of 296.
Use 7 as the next digit of our solution. 
Result so far: 30427.021067
Subtracting 4984 from 5280 leaves us with 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 15:
2960 divided by 712 is 4 with a remainder of 112.
Write down 4 as next digit of the result. 
Result so far: 30427.0210674
Deduct 2848 from 2960 and we're left with 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Going ahead to step 16:
712 can be fit into 1120 1 times, resulting in a remainder of 408.
Put 1 as the next digit of the answer. 
Result so far: 30427.02106741
Subtracting 712 from 1120 leaves us with 408.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4080, and continue the process.

The final outcome is 30427.02106741, with a leftover of 4.08e-07.