4730402 divided by 644 
The aim is to understand the frequency of 644 in 4730402.

Going ahead to step 1:
644 can be fit into 4 0 times, resulting in a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Take the next digit (7) from the dividend and append it to 4, then repeat: 47 / 644

Step 2:
47 divided by 644 is 0 with a remainder of 47.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 47 to get 47.
Bring next digit (3) of the dividend behind the 47 and repeat the process: 473 / 644

Going ahead to step 3:
If we divide 473 by 644, we get 0 and a remainder of 473.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 473 after subtracting 0 from 473.
Append the next digit (0) from the dividend to 473 and continue with: 4730 / 644

Moving on to step 4:
644 can be fit into 4730 7 times, resulting in a remainder of 222.
Use 7 as the next digit of our solution. 
Result so far: 7.0
Deduct 4508 from 4730 and we're left with 222.
Grab the next digit (4) from the dividend, add it to 222, then carry on: 2224 / 644

Let's proceed to step 5:
2224 divided by 644 is 3 with a remainder of 292.
The next digit of our result is 3. 
Result so far: 73.0
If we take 1932 away from 2224, we end up with 292.
Grab the next digit (0) from the dividend, add it to 292, then carry on: 2920 / 644

Going ahead to step 6:
644 goes into 2920 4 times with a remainder of 344.
Write down 4 as next digit of the result. 
Result so far: 734.0
Subtracting 2576 from 2920 leaves us with 344.
Bring next digit (2) of the dividend behind the 344 and repeat the process: 3442 / 644

Advancing to step 7:
When dividing 3442 by 644, we get 5 with a remainder of 222.
Use 5 as the next digit of our solution. 
Result so far: 7345.0
The remainder is 222 after subtracting 3220 from 3442.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2220, and continue the process.

Step 8:
The number 644 fits into 2220 3 times, leaving a remainder of 288.
Record the quotient 3 as the next digit in the result. 
Result so far: 7345.3
If we take 1932 away from 2220, we end up with 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Going ahead to step 9:
If we divide 2880 by 644, we get 4 and a remainder of 304.
Record the quotient 4 as the next digit in the result. 
Result so far: 7345.34
If we subtract 2576 from 2880, we get 304.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3040, and continue the process.

Step 10:
When dividing 3040 by 644, we get 4 with a remainder of 464.
Use 4 as the next digit of our solution. 
Result so far: 7345.344
If we subtract 2576 from 3040, we get 464.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4640, and continue the process.

The final outcome is 7345.344, with a leftover of 0.0464.