We're dividing 15217077 by 860 
The aim is to understand the frequency of 860 in 15217077.

Going ahead to step 1:
When dividing 1 by 860, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 860

Advancing to step 2:
860 goes into 15 0 times with a remainder of 15.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 15 after subtracting 0 from 15.
Take the next digit (2) from the dividend and append it to 15, then repeat: 152 / 860

On to step 3:
The number 860 fits into 152 0 times, leaving a remainder of 152.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 152 after subtracting 0 from 152.
Fetch the next digit (1) from the dividend, attach it to 152 and continue: 1521 / 860

Let's proceed to step 4:
The number 860 fits into 1521 1 times, leaving a remainder of 661.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 860 from 1521 to get 661.
Bring next digit (7) of the dividend behind the 661 and repeat the process: 6617 / 860

Moving on to step 5:
6617 divided by 860 is 7 with a remainder of 597.
Write down 7 as next digit of the result. 
Result so far: 17.0
Subtract 6020 from 6617 to get 597.
Bring next digit (0) of the dividend behind the 597 and repeat the process: 5970 / 860

Advancing to step 6:
860 can be fit into 5970 6 times, resulting in a remainder of 810.
Write down 6 as next digit of the result. 
Result so far: 176.0
If we subtract 5160 from 5970, we get 810.
Take the next digit (7) from the dividend and append it to 810, then repeat: 8107 / 860

Moving on to step 7:
When dividing 8107 by 860, we get 9 with a remainder of 367.
Use 9 as the next digit of our solution. 
Result so far: 1769.0
If we take 7740 away from 8107, we end up with 367.
Grab the next digit (7) from the dividend, add it to 367, then carry on: 3677 / 860

On to step 8:
860 can be fit into 3677 4 times, resulting in a remainder of 237.
Write down 4 as next digit of the result. 
Result so far: 17694.0
Subtracting 3440 from 3677 leaves us with 237.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2370, and continue the process.

Let's proceed to step 9:
The number 860 fits into 2370 2 times, leaving a remainder of 650.
Write down 2 as next digit of the result. 
Result so far: 17694.2
If we take 1720 away from 2370, we end up with 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6500, and continue the process.

Moving on to step 10:
The number 860 fits into 6500 7 times, leaving a remainder of 480.
Write down 7 as next digit of the result. 
Result so far: 17694.27
Deduct 6020 from 6500 and we're left with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Going ahead to step 11:
When dividing 4800 by 860, we get 5 with a remainder of 500.
The number 5 becomes the next digit in our result. 
Result so far: 17694.275
The remainder is 500 after subtracting 4300 from 4800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

On to step 12:
The number 860 fits into 5000 5 times, leaving a remainder of 700.
Put 5 as the next digit of the answer. 
Result so far: 17694.2755
Subtracting 4300 from 5000 leaves us with 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7000, and continue the process.

After the division, we end up with 17694.2755 and a remainder of 0.007.