We look at the division of 5488046 by 646 
The aim is to understand the frequency of 646 in 5488046.

Going ahead to step 1:
646 goes into 5 0 times with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Fetch the next digit (4) from the dividend, attach it to 5 and continue: 54 / 646

Step 2:
The number 646 fits into 54 0 times, leaving a remainder of 54.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 54, we get 54.
Fetch the next digit (8) from the dividend, attach it to 54 and continue: 548 / 646

Advancing to step 3:
646 can be fit into 548 0 times, resulting in a remainder of 548.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 548, we get 548.
Fetch the next digit (8) from the dividend, attach it to 548 and continue: 5488 / 646

Advancing to step 4:
When dividing 5488 by 646, we get 8 with a remainder of 320.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Subtracting 5168 from 5488 leaves us with 320.
Include the next digit (0) from the dividend after 320, then repeat: 3200 / 646

Advancing to step 5:
646 can be fit into 3200 4 times, resulting in a remainder of 616.
Use 4 as the next digit of our solution. 
Result so far: 84.0
The remainder is 616 after subtracting 2584 from 3200.
Include the next digit (4) from the dividend after 616, then repeat: 6164 / 646

Step 6:
646 goes into 6164 9 times with a remainder of 350.
The number 9 becomes the next digit in our result. 
Result so far: 849.0
Subtracting 5814 from 6164 leaves us with 350.
Fetch the next digit (6) from the dividend, attach it to 350 and continue: 3506 / 646

Going ahead to step 7:
646 can be fit into 3506 5 times, resulting in a remainder of 276.
The next digit of our result is 5. 
Result so far: 8495.0
Subtract 3230 from 3506 to get 276.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2760, and continue the process.

On to step 8:
646 can be fit into 2760 4 times, resulting in a remainder of 176.
The number 4 becomes the next digit in our result. 
Result so far: 8495.4
Subtracting 2584 from 2760 leaves us with 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Going ahead to step 9:
646 can be fit into 1760 2 times, resulting in a remainder of 468.
Record the quotient 2 as the next digit in the result. 
Result so far: 8495.42
Deduct 1292 from 1760 and we're left with 468.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4680, and continue the process.

On to step 10:
If we divide 4680 by 646, we get 7 and a remainder of 158.
Use 7 as the next digit of our solution. 
Result so far: 8495.427
If we take 4522 away from 4680, we end up with 158.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1580, and continue the process.

Advancing to step 11:
If we divide 1580 by 646, we get 2 and a remainder of 288.
Use 2 as the next digit of our solution. 
Result so far: 8495.4272
If we take 1292 away from 1580, 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.

Advancing to step 12:
If we divide 2880 by 646, we get 4 and a remainder of 296.
Use 4 as the next digit of our solution. 
Result so far: 8495.42724
Subtracting 2584 from 2880 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.

Let's proceed to step 13:
646 can be fit into 2960 4 times, resulting in a remainder of 376.
The next digit of our result is 4. 
Result so far: 8495.427244
Subtract 2584 from 2960 to get 376.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3760, and continue the process.

In conclusion, the division gives 8495.427244 with a balance of 3.76e-05.