64401644 divided by 713 
The aim is to understand the frequency of 713 in 64401644.

Advancing to step 1:
6 divided by 713 is 0 with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 713

Moving on to step 2:
713 goes into 64 0 times with a remainder of 64.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 64 to get 64.
Include the next digit (4) from the dividend after 64, then repeat: 644 / 713

Advancing to step 3:
If we divide 644 by 713, we get 0 and a remainder of 644.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 644 leaves us with 644.
Take the next digit (0) from the dividend and append it to 644, then repeat: 6440 / 713

Advancing to step 4:
713 can be fit into 6440 9 times, resulting in a remainder of 23.
The next digit of our result is 9. 
Result so far: 9.0
If we subtract 6417 from 6440, we get 23.
Include the next digit (1) from the dividend after 23, then repeat: 231 / 713

Let's proceed to step 5:
If we divide 231 by 713, we get 0 and a remainder of 231.
The number 0 becomes the next digit in our result. 
Result so far: 90.0
If we subtract 0 from 231, we get 231.
Bring next digit (6) of the dividend behind the 231 and repeat the process: 2316 / 713

Advancing to step 6:
2316 divided by 713 is 3 with a remainder of 177.
The next digit of our result is 3. 
Result so far: 903.0
Subtracting 2139 from 2316 leaves us with 177.
Include the next digit (4) from the dividend after 177, then repeat: 1774 / 713

Step 7:
If we divide 1774 by 713, we get 2 and a remainder of 348.
Write down 2 as next digit of the result. 
Result so far: 9032.0
If we take 1426 away from 1774, we end up with 348.
Include the next digit (4) from the dividend after 348, then repeat: 3484 / 713

Step 8:
3484 divided by 713 is 4 with a remainder of 632.
Write down 4 as next digit of the result. 
Result so far: 90324.0
Subtracting 2852 from 3484 leaves us with 632.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6320, and continue the process.

Moving on to step 9:
6320 divided by 713 is 8 with a remainder of 616.
Use 8 as the next digit of our solution. 
Result so far: 90324.8
Subtract 5704 from 6320 to get 616.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6160, and continue the process.

Moving on to step 10:
713 can be fit into 6160 8 times, resulting in a remainder of 456.
The number 8 becomes the next digit in our result. 
Result so far: 90324.88
If we take 5704 away from 6160, we end up with 456.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4560, and continue the process.

After the division, we end up with 90324.88 and a remainder of 0.456.