33209526 divided by 661 
The aim is to understand the frequency of 661 in 33209526.

Step 1:
If we divide 3 by 661, we get 0 and a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Bring next digit (3) of the dividend behind the 3 and repeat the process: 33 / 661

On to step 2:
33 divided by 661 is 0 with a remainder of 33.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 33 leaves us with 33.
Bring next digit (2) of the dividend behind the 33 and repeat the process: 332 / 661

On to step 3:
When dividing 332 by 661, we get 0 with a remainder of 332.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 332 after subtracting 0 from 332.
Bring next digit (0) of the dividend behind the 332 and repeat the process: 3320 / 661

Going ahead to step 4:
661 goes into 3320 5 times with a remainder of 15.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
Subtracting 3305 from 3320 leaves us with 15.
Take the next digit (9) from the dividend and append it to 15, then repeat: 159 / 661

Going ahead to step 5:
When dividing 159 by 661, we get 0 with a remainder of 159.
The number 0 becomes the next digit in our result. 
Result so far: 50.0
If we take 0 away from 159, we end up with 159.
Include the next digit (5) from the dividend after 159, then repeat: 1595 / 661

On to step 6:
The number 661 fits into 1595 2 times, leaving a remainder of 273.
Put 2 as the next digit of the answer. 
Result so far: 502.0
Subtract 1322 from 1595 to get 273.
Include the next digit (2) from the dividend after 273, then repeat: 2732 / 661

Moving on to step 7:
If we divide 2732 by 661, we get 4 and a remainder of 88.
The number 4 becomes the next digit in our result. 
Result so far: 5024.0
The remainder is 88 after subtracting 2644 from 2732.
Include the next digit (6) from the dividend after 88, then repeat: 886 / 661

Let's proceed to step 8:
661 can be fit into 886 1 times, resulting in a remainder of 225.
The number 1 becomes the next digit in our result. 
Result so far: 50241.0
Subtracting 661 from 886 leaves us with 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Step 9:
661 can be fit into 2250 3 times, resulting in a remainder of 267.
Use 3 as the next digit of our solution. 
Result so far: 50241.3
If we subtract 1983 from 2250, we get 267.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2670, and continue the process.

Going ahead to step 10:
661 goes into 2670 4 times with a remainder of 26.
Record the quotient 4 as the next digit in the result. 
Result so far: 50241.34
If we take 2644 away from 2670, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Step 11:
661 can be fit into 260 0 times, resulting in a remainder of 260.
The number 0 becomes the next digit in our result. 
Result so far: 50241.34
If we take 0 away from 260, we end up with 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Advancing to step 12:
The number 661 fits into 2600 3 times, leaving a remainder of 617.
The next digit of our result is 3. 
Result so far: 50241.3403
If we take 1983 away from 2600, we end up with 617.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6170, and continue the process.

On to step 13:
661 can be fit into 6170 9 times, resulting in a remainder of 221.
Use 9 as the next digit of our solution. 
Result so far: 50241.34039
Subtracting 5949 from 6170 leaves us with 221.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2210, and continue the process.

Step 14:
If we divide 2210 by 661, we get 3 and a remainder of 227.
The number 3 becomes the next digit in our result. 
Result so far: 50241.340393
The remainder is 227 after subtracting 1983 from 2210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2270, and continue the process.

Going ahead to step 15:
The number 661 fits into 2270 3 times, leaving a remainder of 287.
Write down 3 as next digit of the result. 
Result so far: 50241.3403933
Subtract 1983 from 2270 to get 287.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2870, and continue the process.

The final outcome is 50241.3403933, with a leftover of 2.87e-06.