We look at the division of 30075907 by 243 
The aim is to understand the frequency of 243 in 30075907.

Going ahead to step 1:
If we divide 3 by 243, we get 0 and a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Include the next digit (0) from the dividend after 3, then repeat: 30 / 243

Let's proceed to step 2:
The number 243 fits into 30 0 times, leaving a remainder of 30.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 30 and we're left with 30.
Include the next digit (0) from the dividend after 30, then repeat: 300 / 243

Going ahead to step 3:
243 goes into 300 1 times with a remainder of 57.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 243 from 300 to get 57.
Append the next digit (7) from the dividend to 57 and continue with: 577 / 243

Advancing to step 4:
If we divide 577 by 243, we get 2 and a remainder of 91.
Write down 2 as next digit of the result. 
Result so far: 12.0
The remainder is 91 after subtracting 486 from 577.
Append the next digit (5) from the dividend to 91 and continue with: 915 / 243

Advancing to step 5:
243 goes into 915 3 times with a remainder of 186.
Record the quotient 3 as the next digit in the result. 
Result so far: 123.0
Subtracting 729 from 915 leaves us with 186.
Take the next digit (9) from the dividend and append it to 186, then repeat: 1869 / 243

Moving on to step 6:
The number 243 fits into 1869 7 times, leaving a remainder of 168.
Use 7 as the next digit of our solution. 
Result so far: 1237.0
Subtract 1701 from 1869 to get 168.
Fetch the next digit (0) from the dividend, attach it to 168 and continue: 1680 / 243

Advancing to step 7:
If we divide 1680 by 243, we get 6 and a remainder of 222.
Record the quotient 6 as the next digit in the result. 
Result so far: 12376.0
Subtract 1458 from 1680 to get 222.
Include the next digit (7) from the dividend after 222, then repeat: 2227 / 243

On to step 8:
If we divide 2227 by 243, we get 9 and a remainder of 40.
Write down 9 as next digit of the result. 
Result so far: 123769.0
The remainder is 40 after subtracting 2187 from 2227.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 9:
243 can be fit into 400 1 times, resulting in a remainder of 157.
Record the quotient 1 as the next digit in the result. 
Result so far: 123769.1
Deduct 243 from 400 and we're left with 157.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1570, and continue the process.

Going ahead to step 10:
1570 divided by 243 is 6 with a remainder of 112.
Put 6 as the next digit of the answer. 
Result so far: 123769.16
Subtract 1458 from 1570 to get 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

On to step 11:
The number 243 fits into 1120 4 times, leaving a remainder of 148.
Write down 4 as next digit of the result. 
Result so far: 123769.164
Deduct 972 from 1120 and we're left with 148.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

Step 12:
The number 243 fits into 1480 6 times, leaving a remainder of 22.
Use 6 as the next digit of our solution. 
Result so far: 123769.1646
If we subtract 1458 from 1480, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 13:
The number 243 fits into 220 0 times, leaving a remainder of 220.
Put 0 as the next digit of the answer. 
Result so far: 123769.1646
If we subtract 0 from 220, we get 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Let's proceed to step 14:
When dividing 2200 by 243, we get 9 with a remainder of 13.
Put 9 as the next digit of the answer. 
Result so far: 123769.164609
If we take 2187 away from 2200, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Step 15:
When dividing 130 by 243, we get 0 with a remainder of 130.
Use 0 as the next digit of our solution. 
Result so far: 123769.164609
Subtract 0 from 130 to get 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Let's proceed to step 16:
1300 divided by 243 is 5 with a remainder of 85.
Record the quotient 5 as the next digit in the result. 
Result so far: 123769.16460905
Subtracting 1215 from 1300 leaves us with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

The final result is 123769.16460905 with a remainder of 8.5e-08.