We're dividing 59760607 by 15 
The aim is to understand the frequency of 15 in 59760607.

Advancing to step 1:
The number 15 fits into 5 0 times, leaving a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Take the next digit (9) from the dividend and append it to 5, then repeat: 59 / 15

Moving on to step 2:
If we divide 59 by 15, we get 3 and a remainder of 14.
Write down 3 as next digit of the result. 
Result so far: 3.0
Deduct 45 from 59 and we're left with 14.
Take the next digit (7) from the dividend and append it to 14, then repeat: 147 / 15

Moving on to step 3:
The number 15 fits into 147 9 times, leaving a remainder of 12.
The number 9 becomes the next digit in our result. 
Result so far: 39.0
If we take 135 away from 147, we end up with 12.
Take the next digit (6) from the dividend and append it to 12, then repeat: 126 / 15

Moving on to step 4:
15 goes into 126 8 times with a remainder of 6.
Write down 8 as next digit of the result. 
Result so far: 398.0
Subtracting 120 from 126 leaves us with 6.
Take the next digit (0) from the dividend and append it to 6, then repeat: 60 / 15

Advancing to step 5:
60 divided by 15 is 4 with a remainder of 0.
The next digit of our result is 4. 
Result so far: 3984.0
Deduct 60 from 60 and we're left with 0.
Take the next digit (6) from the dividend and append it to 0, then repeat: 6 / 15

Going ahead to step 6:
15 goes into 6 0 times with a remainder of 6.
The next digit of our result is 0. 
Result so far: 39840.0
Subtracting 0 from 6 leaves us with 6.
Include the next digit (0) from the dividend after 6, then repeat: 60 / 15

Going ahead to step 7:
60 divided by 15 is 4 with a remainder of 0.
Put 4 as the next digit of the answer. 
Result so far: 398404.0
Deduct 60 from 60 and we're left with 0.
Include the next digit (7) from the dividend after 0, then repeat: 7 / 15

Moving on to step 8:
The number 15 fits into 7 0 times, leaving a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 3984040.0
Deduct 0 from 7 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 9:
When dividing 70 by 15, we get 4 with a remainder of 10.
Put 4 as the next digit of the answer. 
Result so far: 3984040.4
Deduct 60 from 70 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 10:
100 divided by 15 is 6 with a remainder of 10.
Record the quotient 6 as the next digit in the result. 
Result so far: 3984040.46
If we subtract 90 from 100, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 11:
100 divided by 15 is 6 with a remainder of 10.
Use 6 as the next digit of our solution. 
Result so far: 3984040.466
Deduct 90 from 100 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

After the division, we end up with 3984040.466 and a remainder of 0.001.