Let's divide 358361 by 15
The aim is to understand the frequency of 15 in 358361.

Step 1:
15 can be fit into 3 0 times, resulting in 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 (5) from the dividend after 3, then repeat: 35 / 15

Step 2:
15 can be fit into 35 2 times, resulting in a remainder of 5.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we subtract 30 from 35, we get 5.
Fetch the next digit (8) from the dividend, attach it to 5 and continue: 58 / 15

Let's proceed to step 3:
15 goes into 58 3 times with a remainder of 13.
Put 3 as the next digit of the answer. 
Result so far: 23.0
Subtracting 45 from 58 leaves us with 13.
Take the next digit (3) from the dividend and append it to 13, then repeat: 133 / 15

Let's proceed to step 4:
133 divided by 15 is 8 with a remainder of 13.
Put 8 as the next digit of the answer. 
Result so far: 238.0
If we take 120 away from 133, we end up with 13.
Take the next digit (6) from the dividend and append it to 13, then repeat: 136 / 15

Step 5:
The number 15 fits into 136 9 times, leaving a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 2389.0
Deduct 135 from 136 and we're left with 1.
Append the next digit (1) from the dividend to 1 and continue with: 11 / 15

Advancing to step 6:
15 can be fit into 11 0 times, resulting in a remainder of 11.
The number 0 becomes the next digit in our result. 
Result so far: 23890.0
If we subtract 0 from 11, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 7:
15 goes into 110 7 times with a remainder of 5.
Use 7 as the next digit of our solution. 
Result so far: 23890.7
Subtracting 105 from 110 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 8:
If we divide 50 by 15, we get 3 and a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 23890.73
Subtracting 45 from 50 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 9:
15 can be fit into 50 3 times, resulting in a remainder of 5.
Use 3 as the next digit of our solution. 
Result so far: 23890.733
The remainder is 5 after subtracting 45 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

The final result is 23890.733 with a remainder of 0.0005.