Let's divide 221581 by 65
The aim is to understand the frequency of 65 in 221581.

Moving on to step 1:
2 divided by 65 is 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Bring next digit (2) of the dividend behind the 2 and repeat the process: 22 / 65

Going ahead to step 2:
If we divide 22 by 65, we get 0 and a remainder of 22.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 22 to get 22.
Fetch the next digit (1) from the dividend, attach it to 22 and continue: 221 / 65

Advancing to step 3:
The number 65 fits into 221 3 times, leaving a remainder of 26.
The next digit of our result is 3. 
Result so far: 3.0
Deduct 195 from 221 and we're left with 26.
Include the next digit (5) from the dividend after 26, then repeat: 265 / 65

Let's proceed to step 4:
If we divide 265 by 65, we get 4 and a remainder of 5.
The next digit of our result is 4. 
Result so far: 34.0
Deduct 260 from 265 and we're left with 5.
Fetch the next digit (8) from the dividend, attach it to 5 and continue: 58 / 65

Advancing to step 5:
65 can be fit into 58 0 times, resulting in a remainder of 58.
The number 0 becomes the next digit in our result. 
Result so far: 340.0
Deduct 0 from 58 and we're left with 58.
Include the next digit (1) from the dividend after 58, then repeat: 581 / 65

On to step 6:
When dividing 581 by 65, we get 8 with a remainder of 61.
Record the quotient 8 as the next digit in the result. 
Result so far: 3408.0
Subtracting 520 from 581 leaves us with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Step 7:
If we divide 610 by 65, we get 9 and a remainder of 25.
Put 9 as the next digit of the answer. 
Result so far: 3408.9
The remainder is 25 after subtracting 585 from 610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Step 8:
When dividing 250 by 65, we get 3 with a remainder of 55.
Use 3 as the next digit of our solution. 
Result so far: 3408.93
Subtracting 195 from 250 leaves us with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Moving on to step 9:
550 divided by 65 is 8 with a remainder of 30.
The next digit of our result is 8. 
Result so far: 3408.938
If we subtract 520 from 550, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 10:
65 goes into 300 4 times with a remainder of 40.
Put 4 as the next digit of the answer. 
Result so far: 3408.9384
Deduct 260 from 300 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 11:
65 goes into 400 6 times with a remainder of 10.
Use 6 as the next digit of our solution. 
Result so far: 3408.93846
Subtracting 390 from 400 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 12:
If we divide 100 by 65, we get 1 and a remainder of 35.
Record the quotient 1 as the next digit in the result. 
Result so far: 3408.938461
Subtract 65 from 100 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Moving on to step 13:
65 goes into 350 5 times with a remainder of 25.
The next digit of our result is 5. 
Result so far: 3408.9384615
Subtract 325 from 350 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Moving on to step 14:
65 goes into 250 3 times with a remainder of 55.
Use 3 as the next digit of our solution. 
Result so far: 3408.93846153
If we take 195 away from 250, we end up with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Our division results in 3408.93846153 with a remaining 5.5e-08.