We divide 956963 by 15
The aim is to understand the frequency of 15 in 956963.

Let's proceed to step 1:
The number 15 fits into 9 0 times, leaving a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Fetch the next digit (5) from the dividend, attach it to 9 and continue: 95 / 15

Let's proceed to step 2:
If we divide 95 by 15, we get 6 and a remainder of 5.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
Subtract 90 from 95 to get 5.
Take the next digit (6) from the dividend and append it to 5, then repeat: 56 / 15

Step 3:
If we divide 56 by 15, we get 3 and a remainder of 11.
Use 3 as the next digit of our solution. 
Result so far: 63.0
The remainder is 11 after subtracting 45 from 56.
Append the next digit (9) from the dividend to 11 and continue with: 119 / 15

Advancing to step 4:
If we divide 119 by 15, we get 7 and a remainder of 14.
Put 7 as the next digit of the answer. 
Result so far: 637.0
Subtract 105 from 119 to get 14.
Bring next digit (6) of the dividend behind the 14 and repeat the process: 146 / 15

Going ahead to step 5:
When dividing 146 by 15, we get 9 with a remainder of 11.
Put 9 as the next digit of the answer. 
Result so far: 6379.0
The remainder is 11 after subtracting 135 from 146.
Grab the next digit (3) from the dividend, add it to 11, then carry on: 113 / 15

Step 6:
If we divide 113 by 15, we get 7 and a remainder of 8.
The number 7 becomes the next digit in our result. 
Result so far: 63797.0
Deduct 105 from 113 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 7:
When dividing 80 by 15, we get 5 with a remainder of 5.
Record the quotient 5 as the next digit in the result. 
Result so far: 63797.5
Subtract 75 from 80 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 8:
When dividing 50 by 15, we get 3 with a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 63797.53
If we subtract 45 from 50, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 9:
When dividing 50 by 15, we get 3 with a remainder of 5.
Record the quotient 3 as the next digit in the result. 
Result so far: 63797.533
Deduct 45 from 50 and we're left 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.

The final result is 63797.533 with a remainder of 0.0005.