We look at the division of 11015601 by 30 
The aim is to understand the frequency of 30 in 11015601.

Step 1:
1 divided by 30 is 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Include the next digit (1) from the dividend after 1, then repeat: 11 / 30

Moving on to step 2:
When dividing 11 by 30, we get 0 with a remainder of 11.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 11, we get 11.
Bring next digit (0) of the dividend behind the 11 and repeat the process: 110 / 30

Advancing to step 3:
If we divide 110 by 30, we get 3 and a remainder of 20.
Use 3 as the next digit of our solution. 
Result so far: 3.0
The remainder is 20 after subtracting 90 from 110.
Grab the next digit (1) from the dividend, add it to 20, then carry on: 201 / 30

Going ahead to step 4:
The number 30 fits into 201 6 times, leaving a remainder of 21.
Record the quotient 6 as the next digit in the result. 
Result so far: 36.0
If we take 180 away from 201, we end up with 21.
Fetch the next digit (5) from the dividend, attach it to 21 and continue: 215 / 30

Step 5:
The number 30 fits into 215 7 times, leaving a remainder of 5.
Write down 7 as next digit of the result. 
Result so far: 367.0
Subtract 210 from 215 to get 5.
Include the next digit (6) from the dividend after 5, then repeat: 56 / 30

Step 6:
When dividing 56 by 30, we get 1 with a remainder of 26.
The next digit of our result is 1. 
Result so far: 3671.0
If we subtract 30 from 56, we get 26.
Take the next digit (0) from the dividend and append it to 26, then repeat: 260 / 30

Let's proceed to step 7:
260 divided by 30 is 8 with a remainder of 20.
Put 8 as the next digit of the answer. 
Result so far: 36718.0
Subtracting 240 from 260 leaves us with 20.
Take the next digit (1) from the dividend and append it to 20, then repeat: 201 / 30

Moving on to step 8:
30 goes into 201 6 times with a remainder of 21.
The next digit of our result is 6. 
Result so far: 367186.0
Subtract 180 from 201 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Moving on to step 9:
30 goes into 210 7 times with a remainder of 0.
The number 7 becomes the next digit in our result. 
Result so far: 367186.7
If we subtract 210 from 210, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 10:
30 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 367186.7
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 11:
30 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 367186.7
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 367186.7, with a leftover of 0.0.