76337135 divided by 15 
The aim is to understand the frequency of 15 in 76337135.

Step 1:
When dividing 7 by 15, we get 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Take the next digit (6) from the dividend and append it to 7, then repeat: 76 / 15

Moving on to step 2:
If we divide 76 by 15, we get 5 and a remainder of 1.
Use 5 as the next digit of our solution. 
Result so far: 5.0
The remainder is 1 after subtracting 75 from 76.
Include the next digit (3) from the dividend after 1, then repeat: 13 / 15

On to step 3:
15 goes into 13 0 times with a remainder of 13.
The next digit of our result is 0. 
Result so far: 50.0
If we take 0 away from 13, we end up with 13.
Include the next digit (3) from the dividend after 13, then repeat: 133 / 15

Going ahead to step 4:
When dividing 133 by 15, we get 8 with a remainder of 13.
The number 8 becomes the next digit in our result. 
Result so far: 508.0
Subtract 120 from 133 to get 13.
Take the next digit (7) from the dividend and append it to 13, then repeat: 137 / 15

On to step 5:
When dividing 137 by 15, we get 9 with a remainder of 2.
The number 9 becomes the next digit in our result. 
Result so far: 5089.0
The remainder is 2 after subtracting 135 from 137.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 15

Going ahead to step 6:
21 divided by 15 is 1 with a remainder of 6.
The next digit of our result is 1. 
Result so far: 50891.0
Subtract 15 from 21 to get 6.
Append the next digit (3) from the dividend to 6 and continue with: 63 / 15

Step 7:
The number 15 fits into 63 4 times, leaving a remainder of 3.
Write down 4 as next digit of the result. 
Result so far: 508914.0
Deduct 60 from 63 and we're left with 3.
Bring next digit (5) of the dividend behind the 3 and repeat the process: 35 / 15

Moving on to step 8:
15 can be fit into 35 2 times, resulting in a remainder of 5.
Put 2 as the next digit of the answer. 
Result so far: 5089142.0
Subtract 30 from 35 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.

Advancing to step 9:
15 can be fit into 50 3 times, resulting in a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 5089142.3
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.

Step 10:
If we divide 50 by 15, we get 3 and a remainder of 5.
Put 3 as the next digit of the answer. 
Result so far: 5089142.33
If we take 45 away from 50, we end up 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.

After the division, we end up with 5089142.33 and a remainder of 0.005.