902073 ÷ 15 
The aim is to understand the frequency of 15 in 902073.

Advancing to step 1:
If we divide 9 by 15, we get 0 and a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Take the next digit (0) from the dividend and append it to 9, then repeat: 90 / 15

Let's proceed to step 2:
15 can be fit into 90 6 times, resulting in a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
If we take 90 away from 90, we end up with 0.
Append the next digit (2) from the dividend to 0 and continue with: 2 / 15

Let's proceed to step 3:
15 goes into 2 0 times with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 60.0
The remainder is 2 after subtracting 0 from 2.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 15

Going ahead to step 4:
When dividing 20 by 15, we get 1 with a remainder of 5.
Record the quotient 1 as the next digit in the result. 
Result so far: 601.0
If we subtract 15 from 20, we get 5.
Fetch the next digit (7) from the dividend, attach it to 5 and continue: 57 / 15

Let's proceed to step 5:
If we divide 57 by 15, we get 3 and a remainder of 12.
The number 3 becomes the next digit in our result. 
Result so far: 6013.0
If we take 45 away from 57, we end up with 12.
Include the next digit (3) from the dividend after 12, then repeat: 123 / 15

Let's proceed to step 6:
123 divided by 15 is 8 with a remainder of 3.
Put 8 as the next digit of the answer. 
Result so far: 60138.0
Subtract 120 from 123 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 7:
30 divided by 15 is 2 with a remainder of 0.
Use 2 as the next digit of our solution. 
Result so far: 60138.2
If we take 30 away from 30, 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.

Moving on to step 8:
15 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 60138.2
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 9:
If we divide 0 by 15, we get 0 and a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 60138.2
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 60138.2 with a remaining 0.0.