We look at the division of 46895924 by 646 
The aim is to understand the frequency of 646 in 46895924.

On to step 1:
If we divide 4 by 646, we get 0 and a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Bring next digit (6) of the dividend behind the 4 and repeat the process: 46 / 646

Let's proceed to step 2:
646 goes into 46 0 times with a remainder of 46.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 46 leaves us with 46.
Bring next digit (8) of the dividend behind the 46 and repeat the process: 468 / 646

Let's proceed to step 3:
468 divided by 646 is 0 with a remainder of 468.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 468, we get 468.
Append the next digit (9) from the dividend to 468 and continue with: 4689 / 646

Advancing to step 4:
4689 divided by 646 is 7 with a remainder of 167.
Put 7 as the next digit of the answer. 
Result so far: 7.0
The remainder is 167 after subtracting 4522 from 4689.
Fetch the next digit (5) from the dividend, attach it to 167 and continue: 1675 / 646

Let's proceed to step 5:
The number 646 fits into 1675 2 times, leaving a remainder of 383.
Record the quotient 2 as the next digit in the result. 
Result so far: 72.0
Subtract 1292 from 1675 to get 383.
Grab the next digit (9) from the dividend, add it to 383, then carry on: 3839 / 646

Going ahead to step 6:
If we divide 3839 by 646, we get 5 and a remainder of 609.
Record the quotient 5 as the next digit in the result. 
Result so far: 725.0
The remainder is 609 after subtracting 3230 from 3839.
Bring next digit (2) of the dividend behind the 609 and repeat the process: 6092 / 646

Going ahead to step 7:
646 can be fit into 6092 9 times, resulting in a remainder of 278.
Put 9 as the next digit of the answer. 
Result so far: 7259.0
If we subtract 5814 from 6092, we get 278.
Include the next digit (4) from the dividend after 278, then repeat: 2784 / 646

Going ahead to step 8:
646 goes into 2784 4 times with a remainder of 200.
The next digit of our result is 4. 
Result so far: 72594.0
If we take 2584 away from 2784, we end up with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Advancing to step 9:
If we divide 2000 by 646, we get 3 and a remainder of 62.
Use 3 as the next digit of our solution. 
Result so far: 72594.3
Subtract 1938 from 2000 to get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Moving on to step 10:
620 divided by 646 is 0 with a remainder of 620.
Put 0 as the next digit of the answer. 
Result so far: 72594.3
Deduct 0 from 620 and we're left with 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6200, and continue the process.

Step 11:
6200 divided by 646 is 9 with a remainder of 386.
Write down 9 as next digit of the result. 
Result so far: 72594.309
Deduct 5814 from 6200 and we're left with 386.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3860, and continue the process.

Advancing to step 12:
3860 divided by 646 is 5 with a remainder of 630.
The number 5 becomes the next digit in our result. 
Result so far: 72594.3095
Deduct 3230 from 3860 and we're left with 630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6300, and continue the process.

On to step 13:
6300 divided by 646 is 9 with a remainder of 486.
The number 9 becomes the next digit in our result. 
Result so far: 72594.30959
If we subtract 5814 from 6300, we get 486.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4860, and continue the process.

On to step 14:
646 goes into 4860 7 times with a remainder of 338.
The next digit of our result is 7. 
Result so far: 72594.309597
The remainder is 338 after subtracting 4522 from 4860.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3380, and continue the process.

Moving on to step 15:
646 can be fit into 3380 5 times, resulting in a remainder of 150.
Record the quotient 5 as the next digit in the result. 
Result so far: 72594.3095975
The remainder is 150 after subtracting 3230 from 3380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Let's proceed to step 16:
If we divide 1500 by 646, we get 2 and a remainder of 208.
Use 2 as the next digit of our solution. 
Result so far: 72594.30959752
Deduct 1292 from 1500 and we're left with 208.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

Our division results in 72594.30959752 with a remaining 2.08e-07.