15654 ÷ 51 
The aim is to understand the frequency of 51 in 15654.

Step 1:
If we divide 1 by 51, we get 0 and a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Fetch the next digit (5) from the dividend, attach it to 1 and continue: 15 / 51

Step 2:
If we divide 15 by 51, we get 0 and a remainder of 15.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 15 after subtracting 0 from 15.
Fetch the next digit (6) from the dividend, attach it to 15 and continue: 156 / 51

Advancing to step 3:
51 goes into 156 3 times with a remainder of 3.
The next digit of our result is 3. 
Result so far: 3.0
If we take 153 away from 156, we end up with 3.
Grab the next digit (5) from the dividend, add it to 3, then carry on: 35 / 51

On to step 4:
51 goes into 35 0 times with a remainder of 35.
Use 0 as the next digit of our solution. 
Result so far: 30.0
The remainder is 35 after subtracting 0 from 35.
Append the next digit (4) from the dividend to 35 and continue with: 354 / 51

Advancing to step 5:
If we divide 354 by 51, we get 6 and a remainder of 48.
The number 6 becomes the next digit in our result. 
Result so far: 306.0
If we take 306 away from 354, 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.

Advancing to step 6:
51 goes into 480 9 times with a remainder of 21.
Write down 9 as next digit of the result. 
Result so far: 306.9
The remainder is 21 after subtracting 459 from 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Going ahead to step 7:
51 can be fit into 210 4 times, resulting in a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 306.94
If we take 204 away from 210, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 8:
51 can be fit into 60 1 times, resulting in a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 306.941
If we take 51 away from 60, we end up 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 9:
51 can be fit into 90 1 times, resulting in a remainder of 39.
The number 1 becomes the next digit in our result. 
Result so far: 306.9411
Deduct 51 from 90 and we're left 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.

The final result is 306.9411 with a remainder of 0.00039.