660516 divided by 51 
The aim is to understand the frequency of 51 in 660516.

Advancing to step 1:
51 can be fit into 6 0 times, resulting in a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 51

Let's proceed to step 2:
The number 51 fits into 66 1 times, leaving a remainder of 15.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 51 from 66 to get 15.
Append the next digit (0) from the dividend to 15 and continue with: 150 / 51

Going ahead to step 3:
If we divide 150 by 51, we get 2 and a remainder of 48.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
Subtract 102 from 150 to get 48.
Bring next digit (5) of the dividend behind the 48 and repeat the process: 485 / 51

On to step 4:
The number 51 fits into 485 9 times, leaving a remainder of 26.
The number 9 becomes the next digit in our result. 
Result so far: 129.0
Subtracting 459 from 485 leaves us with 26.
Append the next digit (1) from the dividend to 26 and continue with: 261 / 51

Step 5:
51 can be fit into 261 5 times, resulting in a remainder of 6.
Put 5 as the next digit of the answer. 
Result so far: 1295.0
The remainder is 6 after subtracting 255 from 261.
Bring next digit (6) of the dividend behind the 6 and repeat the process: 66 / 51

On to step 6:
If we divide 66 by 51, we get 1 and a remainder of 15.
Write down 1 as next digit of the result. 
Result so far: 12951.0
The remainder is 15 after subtracting 51 from 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 7:
51 can be fit into 150 2 times, resulting in a remainder of 48.
Put 2 as the next digit of the answer. 
Result so far: 12951.2
If we take 102 away from 150, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 8:
51 goes into 480 9 times with a remainder of 21.
Record the quotient 9 as the next digit in the result. 
Result so far: 12951.29
If we subtract 459 from 480, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Advancing to step 9:
51 goes into 210 4 times with a remainder of 6.
The next digit of our result is 4. 
Result so far: 12951.294
Subtract 204 from 210 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 10:
The number 51 fits into 60 1 times, leaving a remainder of 9.
Put 1 as the next digit of the answer. 
Result so far: 12951.2941
The remainder is 9 after subtracting 51 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 11:
When dividing 90 by 51, we get 1 with a remainder of 39.
The number 1 becomes the next digit in our result. 
Result so far: 12951.29411
If we take 51 away from 90, we end up with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Our division results in 12951.29411 with a remaining 3.9e-05.