We divide 899790 by 15
The aim is to understand the frequency of 15 in 899790.

On to step 1:
8 divided by 15 is 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Append the next digit (9) from the dividend to 8 and continue with: 89 / 15

Moving on to step 2:
15 can be fit into 89 5 times, resulting in a remainder of 14.
Use 5 as the next digit of our solution. 
Result so far: 5.0
The remainder is 14 after subtracting 75 from 89.
Fetch the next digit (9) from the dividend, attach it to 14 and continue: 149 / 15

Going ahead to step 3:
149 divided by 15 is 9 with a remainder of 14.
Use 9 as the next digit of our solution. 
Result so far: 59.0
If we subtract 135 from 149, we get 14.
Take the next digit (7) from the dividend and append it to 14, then repeat: 147 / 15

Let's proceed to step 4:
147 divided by 15 is 9 with a remainder of 12.
Write down 9 as next digit of the result. 
Result so far: 599.0
Deduct 135 from 147 and we're left with 12.
Bring next digit (9) of the dividend behind the 12 and repeat the process: 129 / 15

Moving on to step 5:
When dividing 129 by 15, we get 8 with a remainder of 9.
Write down 8 as next digit of the result. 
Result so far: 5998.0
Subtract 120 from 129 to get 9.
Take the next digit (0) from the dividend and append it to 9, then repeat: 90 / 15

Advancing to step 6:
90 divided by 15 is 6 with a remainder of 0.
Use 6 as the next digit of our solution. 
Result so far: 59986.0
Subtract 90 from 90 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.

On to step 7:
When dividing 0 by 15, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 59986.0
Deduct 0 from 0 and we're left 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.

Step 8:
15 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 59986.0
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.

The quotient of the division is 59986.0, and the remainder is 0.0.