30162975 divided by 646 
The aim is to understand the frequency of 646 in 30162975.

On to step 1:
646 goes into 3 0 times with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 646

Let's proceed to step 2:
The number 646 fits into 30 0 times, leaving a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 30, we end up with 30.
Fetch the next digit (1) from the dividend, attach it to 30 and continue: 301 / 646

On to step 3:
301 divided by 646 is 0 with a remainder of 301.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 301, we get 301.
Append the next digit (6) from the dividend to 301 and continue with: 3016 / 646

On to step 4:
646 goes into 3016 4 times with a remainder of 432.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Deduct 2584 from 3016 and we're left with 432.
Include the next digit (2) from the dividend after 432, then repeat: 4322 / 646

Let's proceed to step 5:
If we divide 4322 by 646, we get 6 and a remainder of 446.
Record the quotient 6 as the next digit in the result. 
Result so far: 46.0
The remainder is 446 after subtracting 3876 from 4322.
Bring next digit (9) of the dividend behind the 446 and repeat the process: 4469 / 646

Advancing to step 6:
If we divide 4469 by 646, we get 6 and a remainder of 593.
Use 6 as the next digit of our solution. 
Result so far: 466.0
Deduct 3876 from 4469 and we're left with 593.
Grab the next digit (7) from the dividend, add it to 593, then carry on: 5937 / 646

Advancing to step 7:
If we divide 5937 by 646, we get 9 and a remainder of 123.
The next digit of our result is 9. 
Result so far: 4669.0
The remainder is 123 after subtracting 5814 from 5937.
Append the next digit (5) from the dividend to 123 and continue with: 1235 / 646

Going ahead to step 8:
646 goes into 1235 1 times with a remainder of 589.
Record the quotient 1 as the next digit in the result. 
Result so far: 46691.0
The remainder is 589 after subtracting 646 from 1235.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5890, and continue the process.

Going ahead to step 9:
646 can be fit into 5890 9 times, resulting in a remainder of 76.
Write down 9 as next digit of the result. 
Result so far: 46691.9
Subtract 5814 from 5890 to get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Moving on to step 10:
646 goes into 760 1 times with a remainder of 114.
The number 1 becomes the next digit in our result. 
Result so far: 46691.91
Deduct 646 from 760 and we're left with 114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Going ahead to step 11:
When dividing 1140 by 646, we get 1 with a remainder of 494.
Use 1 as the next digit of our solution. 
Result so far: 46691.911
Deduct 646 from 1140 and we're left with 494.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4940, and continue the process.

The final result is 46691.911 with a remainder of 0.0494.