We look at the division of 1560 by 51 
The aim is to understand the frequency of 51 in 1560.

Moving on to step 1:
If we divide 1 by 51, we get 0 and a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (5) from the dividend, add it to 1, then carry on: 15 / 51

Step 2:
The number 51 fits into 15 0 times, leaving a remainder of 15.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 15 leaves us with 15.
Bring next digit (6) of the dividend behind the 15 and repeat the process: 156 / 51

Let's proceed to step 3:
If we divide 156 by 51, we get 3 and a remainder of 3.
Put 3 as the next digit of the answer. 
Result so far: 3.0
The remainder is 3 after subtracting 153 from 156.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 51

Step 4:
51 goes into 30 0 times with a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 30.0
Deduct 0 from 30 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 5:
51 can be fit into 300 5 times, resulting in a remainder of 45.
Put 5 as the next digit of the answer. 
Result so far: 30.5
Subtracting 255 from 300 leaves us with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Going ahead to step 6:
When dividing 450 by 51, we get 8 with a remainder of 42.
The next digit of our result is 8. 
Result so far: 30.58
Deduct 408 from 450 and we're left with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 7:
51 can be fit into 420 8 times, resulting in a remainder of 12.
The number 8 becomes the next digit in our result. 
Result so far: 30.588
If we subtract 408 from 420, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final outcome is 30.588, with a leftover of 0.0012.