281649 ÷ 51 
The aim is to understand the frequency of 51 in 281649.

Moving on to step 1:
51 can be fit into 2 0 times, resulting in a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Bring next digit (8) of the dividend behind the 2 and repeat the process: 28 / 51

Step 2:
28 divided by 51 is 0 with a remainder of 28.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 28 to get 28.
Include the next digit (1) from the dividend after 28, then repeat: 281 / 51

Let's proceed to step 3:
51 can be fit into 281 5 times, resulting in a remainder of 26.
The next digit of our result is 5. 
Result so far: 5.0
Deduct 255 from 281 and we're left with 26.
Take the next digit (6) from the dividend and append it to 26, then repeat: 266 / 51

Moving on to step 4:
51 goes into 266 5 times with a remainder of 11.
Write down 5 as next digit of the result. 
Result so far: 55.0
If we subtract 255 from 266, we get 11.
Grab the next digit (4) from the dividend, add it to 11, then carry on: 114 / 51

Advancing to step 5:
When dividing 114 by 51, we get 2 with a remainder of 12.
Write down 2 as next digit of the result. 
Result so far: 552.0
Subtracting 102 from 114 leaves us with 12.
Fetch the next digit (9) from the dividend, attach it to 12 and continue: 129 / 51

Going ahead to step 6:
51 can be fit into 129 2 times, resulting in a remainder of 27.
Put 2 as the next digit of the answer. 
Result so far: 5522.0
The remainder is 27 after subtracting 102 from 129.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

On to step 7:
When dividing 270 by 51, we get 5 with a remainder of 15.
The next digit of our result is 5. 
Result so far: 5522.5
If we take 255 away from 270, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 8:
If we divide 150 by 51, we get 2 and a remainder of 48.
Use 2 as the next digit of our solution. 
Result so far: 5522.52
Subtracting 102 from 150 leaves us 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.

Going ahead to step 9:
480 divided by 51 is 9 with a remainder of 21.
The number 9 becomes the next digit in our result. 
Result so far: 5522.529
If we take 459 away from 480, we end up with 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 10:
If we divide 210 by 51, we get 4 and a remainder of 6.
Use 4 as the next digit of our solution. 
Result so far: 5522.5294
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.

Going ahead to step 11:
The number 51 fits into 60 1 times, leaving a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 5522.52941
Deduct 51 from 60 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 12:
The number 51 fits into 90 1 times, leaving a remainder of 39.
Use 1 as the next digit of our solution. 
Result so far: 5522.529411
The remainder is 39 after subtracting 51 from 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

The final outcome is 5522.529411, with a leftover of 3.9e-06.