We look at the division of 53304732 by 643 
The aim is to understand the frequency of 643 in 53304732.

Step 1:
643 goes into 5 0 times with a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Append the next digit (3) from the dividend to 5 and continue with: 53 / 643

Going ahead to step 2:
643 can be fit into 53 0 times, resulting in a remainder of 53.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 53 leaves us with 53.
Include the next digit (3) from the dividend after 53, then repeat: 533 / 643

Let's proceed to step 3:
The number 643 fits into 533 0 times, leaving a remainder of 533.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 533 leaves us with 533.
Bring next digit (0) of the dividend behind the 533 and repeat the process: 5330 / 643

On to step 4:
5330 divided by 643 is 8 with a remainder of 186.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Subtract 5144 from 5330 to get 186.
Bring next digit (4) of the dividend behind the 186 and repeat the process: 1864 / 643

Step 5:
643 can be fit into 1864 2 times, resulting in a remainder of 578.
Use 2 as the next digit of our solution. 
Result so far: 82.0
If we take 1286 away from 1864, we end up with 578.
Grab the next digit (7) from the dividend, add it to 578, then carry on: 5787 / 643

Let's proceed to step 6:
643 goes into 5787 9 times with a remainder of 0.
The number 9 becomes the next digit in our result. 
Result so far: 829.0
Subtract 5787 from 5787 to get 0.
Grab the next digit (3) from the dividend, add it to 0, then carry on: 3 / 643

Step 7:
When dividing 3 by 643, we get 0 with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 8290.0
If we subtract 0 from 3, we get 3.
Append the next digit (2) from the dividend to 3 and continue with: 32 / 643

Step 8:
The number 643 fits into 32 0 times, leaving a remainder of 32.
Record the quotient 0 as the next digit in the result. 
Result so far: 82900.0
Subtract 0 from 32 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 9:
The number 643 fits into 320 0 times, leaving a remainder of 320.
The next digit of our result is 0. 
Result so far: 82900.0
The remainder is 320 after subtracting 0 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Let's proceed to step 10:
3200 divided by 643 is 4 with a remainder of 628.
Use 4 as the next digit of our solution. 
Result so far: 82900.04
Subtracting 2572 from 3200 leaves us with 628.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6280, and continue the process.

Going ahead to step 11:
If we divide 6280 by 643, we get 9 and a remainder of 493.
Put 9 as the next digit of the answer. 
Result so far: 82900.049
Subtracting 5787 from 6280 leaves us with 493.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4930, and continue the process.

Let's proceed to step 12:
643 goes into 4930 7 times with a remainder of 429.
Use 7 as the next digit of our solution. 
Result so far: 82900.0497
The remainder is 429 after subtracting 4501 from 4930.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4290, and continue the process.

Step 13:
When dividing 4290 by 643, we get 6 with a remainder of 432.
The next digit of our result is 6. 
Result so far: 82900.04976
Subtracting 3858 from 4290 leaves us with 432.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4320, and continue the process.

Advancing to step 14:
643 goes into 4320 6 times with a remainder of 462.
Put 6 as the next digit of the answer. 
Result so far: 82900.049766
If we subtract 3858 from 4320, we get 462.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4620, and continue the process.

The quotient of the division is 82900.049766, and the remainder is 4.62e-05.