We divide 643301 by 27
The aim is to understand the frequency of 27 in 643301.

Moving on to step 1:
If we divide 6 by 27, we get 0 and a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 27

Moving on to step 2:
If we divide 64 by 27, we get 2 and a remainder of 10.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 54 from 64 and we're left with 10.
Include the next digit (3) from the dividend after 10, then repeat: 103 / 27

Step 3:
27 goes into 103 3 times with a remainder of 22.
Record the quotient 3 as the next digit in the result. 
Result so far: 23.0
The remainder is 22 after subtracting 81 from 103.
Fetch the next digit (3) from the dividend, attach it to 22 and continue: 223 / 27

Going ahead to step 4:
27 can be fit into 223 8 times, resulting in a remainder of 7.
Record the quotient 8 as the next digit in the result. 
Result so far: 238.0
If we take 216 away from 223, we end up with 7.
Include the next digit (0) from the dividend after 7, then repeat: 70 / 27

Let's proceed to step 5:
70 divided by 27 is 2 with a remainder of 16.
Put 2 as the next digit of the answer. 
Result so far: 2382.0
Subtracting 54 from 70 leaves us with 16.
Append the next digit (1) from the dividend to 16 and continue with: 161 / 27

Advancing to step 6:
The number 27 fits into 161 5 times, leaving a remainder of 26.
The number 5 becomes the next digit in our result. 
Result so far: 23825.0
Subtract 135 from 161 to get 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 7:
260 divided by 27 is 9 with a remainder of 17.
The number 9 becomes the next digit in our result. 
Result so far: 23825.9
Deduct 243 from 260 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 8:
If we divide 170 by 27, we get 6 and a remainder of 8.
The next digit of our result is 6. 
Result so far: 23825.96
Subtracting 162 from 170 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 9:
When dividing 80 by 27, we get 2 with a remainder of 26.
The number 2 becomes the next digit in our result. 
Result so far: 23825.962
Deduct 54 from 80 and we're left 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.

Advancing to step 10:
If we divide 260 by 27, we get 9 and a remainder of 17.
Put 9 as the next digit of the answer. 
Result so far: 23825.9629
The remainder is 17 after subtracting 243 from 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

On to step 11:
27 goes into 170 6 times with a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 23825.96296
Deduct 162 from 170 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 12:
If we divide 80 by 27, we get 2 and a remainder of 26.
Record the quotient 2 as the next digit in the result. 
Result so far: 23825.962962
Subtracting 54 from 80 leaves us 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.

Moving on to step 13:
If we divide 260 by 27, we get 9 and a remainder of 17.
The next digit of our result is 9. 
Result so far: 23825.9629629
Subtracting 243 from 260 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 14:
If we divide 170 by 27, we get 6 and a remainder of 8.
Use 6 as the next digit of our solution. 
Result so far: 23825.96296296
If we take 162 away from 170, we end up with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The final outcome is 23825.96296296, with a leftover of 8e-09.