46983231 divided by 643 
The aim is to understand the frequency of 643 in 46983231.

Advancing to step 1:
4 divided by 643 is 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Fetch the next digit (6) from the dividend, attach it to 4 and continue: 46 / 643

Step 2:
643 can be fit into 46 0 times, resulting in a remainder of 46.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 46 after subtracting 0 from 46.
Fetch the next digit (9) from the dividend, attach it to 46 and continue: 469 / 643

Moving on to step 3:
When dividing 469 by 643, we get 0 with a remainder of 469.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 469 to get 469.
Bring next digit (8) of the dividend behind the 469 and repeat the process: 4698 / 643

Step 4:
When dividing 4698 by 643, we get 7 with a remainder of 197.
Use 7 as the next digit of our solution. 
Result so far: 7.0
If we subtract 4501 from 4698, we get 197.
Fetch the next digit (3) from the dividend, attach it to 197 and continue: 1973 / 643

Going ahead to step 5:
If we divide 1973 by 643, we get 3 and a remainder of 44.
The number 3 becomes the next digit in our result. 
Result so far: 73.0
Subtract 1929 from 1973 to get 44.
Append the next digit (2) from the dividend to 44 and continue with: 442 / 643

Moving on to step 6:
643 goes into 442 0 times with a remainder of 442.
Record the quotient 0 as the next digit in the result. 
Result so far: 730.0
Subtract 0 from 442 to get 442.
Bring next digit (3) of the dividend behind the 442 and repeat the process: 4423 / 643

On to step 7:
When dividing 4423 by 643, we get 6 with a remainder of 565.
The next digit of our result is 6. 
Result so far: 7306.0
The remainder is 565 after subtracting 3858 from 4423.
Take the next digit (1) from the dividend and append it to 565, then repeat: 5651 / 643

Let's proceed to step 8:
If we divide 5651 by 643, we get 8 and a remainder of 507.
Record the quotient 8 as the next digit in the result. 
Result so far: 73068.0
If we take 5144 away from 5651, we end up with 507.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5070, and continue the process.

Going ahead to step 9:
If we divide 5070 by 643, we get 7 and a remainder of 569.
The number 7 becomes the next digit in our result. 
Result so far: 73068.7
If we take 4501 away from 5070, we end up with 569.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5690, and continue the process.

Let's proceed to step 10:
5690 divided by 643 is 8 with a remainder of 546.
The next digit of our result is 8. 
Result so far: 73068.78
Subtracting 5144 from 5690 leaves us with 546.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5460, and continue the process.

Advancing to step 11:
643 goes into 5460 8 times with a remainder of 316.
Record the quotient 8 as the next digit in the result. 
Result so far: 73068.788
Subtract 5144 from 5460 to get 316.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

Our division results in 73068.788 with a remaining 0.0316.