We're dividing 434970 by 15 
The aim is to understand the frequency of 15 in 434970.

On to step 1:
15 can be fit into 4 0 times, resulting in a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Fetch the next digit (3) from the dividend, attach it to 4 and continue: 43 / 15

Moving on to step 2:
The number 15 fits into 43 2 times, leaving a remainder of 13.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we take 30 away from 43, we end up with 13.
Fetch the next digit (4) from the dividend, attach it to 13 and continue: 134 / 15

Let's proceed to step 3:
If we divide 134 by 15, we get 8 and a remainder of 14.
Put 8 as the next digit of the answer. 
Result so far: 28.0
If we subtract 120 from 134, we get 14.
Grab the next digit (9) from the dividend, add it to 14, then carry on: 149 / 15

Let's proceed to step 4:
When dividing 149 by 15, we get 9 with a remainder of 14.
Write down 9 as next digit of the result. 
Result so far: 289.0
The remainder is 14 after subtracting 135 from 149.
Fetch the next digit (7) from the dividend, attach it to 14 and continue: 147 / 15

Step 5:
When dividing 147 by 15, we get 9 with a remainder of 12.
The number 9 becomes the next digit in our result. 
Result so far: 2899.0
If we subtract 135 from 147, we get 12.
Take the next digit (0) from the dividend and append it to 12, then repeat: 120 / 15

Advancing to step 6:
When dividing 120 by 15, we get 8 with a remainder of 0.
Record the quotient 8 as the next digit in the result. 
Result so far: 28998.0
Deduct 120 from 120 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 7:
When dividing 0 by 15, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 28998.0
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.

On to step 8:
15 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 28998.0
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 quotient of the division is 28998.0, and the remainder is 0.0.