We're dividing 33559926 by 643 
The aim is to understand the frequency of 643 in 33559926.

Advancing to step 1:
3 divided by 643 is 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Bring next digit (3) of the dividend behind the 3 and repeat the process: 33 / 643

Step 2:
643 can be fit into 33 0 times, resulting in a remainder of 33.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 33 after subtracting 0 from 33.
Bring next digit (5) of the dividend behind the 33 and repeat the process: 335 / 643

Step 3:
335 divided by 643 is 0 with a remainder of 335.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 335 after subtracting 0 from 335.
Bring next digit (5) of the dividend behind the 335 and repeat the process: 3355 / 643

Let's proceed to step 4:
The number 643 fits into 3355 5 times, leaving a remainder of 140.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Subtracting 3215 from 3355 leaves us with 140.
Bring next digit (9) of the dividend behind the 140 and repeat the process: 1409 / 643

On to step 5:
When dividing 1409 by 643, we get 2 with a remainder of 123.
Use 2 as the next digit of our solution. 
Result so far: 52.0
If we take 1286 away from 1409, we end up with 123.
Take the next digit (9) from the dividend and append it to 123, then repeat: 1239 / 643

Let's proceed to step 6:
643 goes into 1239 1 times with a remainder of 596.
The next digit of our result is 1. 
Result so far: 521.0
If we take 643 away from 1239, we end up with 596.
Bring next digit (2) of the dividend behind the 596 and repeat the process: 5962 / 643

Moving on to step 7:
The number 643 fits into 5962 9 times, leaving a remainder of 175.
Put 9 as the next digit of the answer. 
Result so far: 5219.0
Deduct 5787 from 5962 and we're left with 175.
Take the next digit (6) from the dividend and append it to 175, then repeat: 1756 / 643

Moving on to step 8:
The number 643 fits into 1756 2 times, leaving a remainder of 470.
The number 2 becomes the next digit in our result. 
Result so far: 52192.0
The remainder is 470 after subtracting 1286 from 1756.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4700, and continue the process.

On to step 9:
The number 643 fits into 4700 7 times, leaving a remainder of 199.
The number 7 becomes the next digit in our result. 
Result so far: 52192.7
If we subtract 4501 from 4700, we get 199.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1990, and continue the process.

Advancing to step 10:
1990 divided by 643 is 3 with a remainder of 61.
The next digit of our result is 3. 
Result so far: 52192.73
If we subtract 1929 from 1990, we get 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Advancing to step 11:
If we divide 610 by 643, we get 0 and a remainder of 610.
The next digit of our result is 0. 
Result so far: 52192.73
The remainder is 610 after subtracting 0 from 610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6100, and continue the process.

Going ahead to step 12:
643 can be fit into 6100 9 times, resulting in a remainder of 313.
Put 9 as the next digit of the answer. 
Result so far: 52192.7309
Deduct 5787 from 6100 and we're left with 313.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3130, and continue the process.

Advancing to step 13:
The number 643 fits into 3130 4 times, leaving a remainder of 558.
Write down 4 as next digit of the result. 
Result so far: 52192.73094
If we subtract 2572 from 3130, we get 558.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5580, and continue the process.

Moving on to step 14:
The number 643 fits into 5580 8 times, leaving a remainder of 436.
The next digit of our result is 8. 
Result so far: 52192.730948
If we subtract 5144 from 5580, we get 436.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4360, and continue the process.

Let's proceed to step 15:
643 can be fit into 4360 6 times, resulting in a remainder of 502.
Record the quotient 6 as the next digit in the result. 
Result so far: 52192.7309486
Deduct 3858 from 4360 and we're left with 502.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5020, and continue the process.

Moving on to step 16:
The number 643 fits into 5020 7 times, leaving a remainder of 519.
Write down 7 as next digit of the result. 
Result so far: 52192.73094867
The remainder is 519 after subtracting 4501 from 5020.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5190, and continue the process.

The quotient of the division is 52192.73094867, and the remainder is 5.19e-07.