511628 ÷ 51 
The aim is to understand the frequency of 51 in 511628.

Let's proceed to step 1:
If we divide 5 by 51, we get 0 and a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 51

Step 2:
The number 51 fits into 51 1 times, leaving a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 51 from 51, we get 0.
Append the next digit (1) from the dividend to 0 and continue with: 1 / 51

Let's proceed to step 3:
When dividing 1 by 51, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 10.0
If we take 0 away from 1, we end up with 1.
Append the next digit (6) from the dividend to 1 and continue with: 16 / 51

Step 4:
16 divided by 51 is 0 with a remainder of 16.
The next digit of our result is 0. 
Result so far: 100.0
Subtracting 0 from 16 leaves us with 16.
Fetch the next digit (2) from the dividend, attach it to 16 and continue: 162 / 51

Advancing to step 5:
51 goes into 162 3 times with a remainder of 9.
The next digit of our result is 3. 
Result so far: 1003.0
Deduct 153 from 162 and we're left with 9.
Append the next digit (8) from the dividend to 9 and continue with: 98 / 51

On to step 6:
The number 51 fits into 98 1 times, leaving a remainder of 47.
Write down 1 as next digit of the result. 
Result so far: 10031.0
If we subtract 51 from 98, we get 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Advancing to step 7:
The number 51 fits into 470 9 times, leaving a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 10031.9
If we take 459 away from 470, we end up with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 8:
51 goes into 110 2 times with a remainder of 8.
The next digit of our result is 2. 
Result so far: 10031.92
Subtract 102 from 110 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 9:
51 can be fit into 80 1 times, resulting in a remainder of 29.
The number 1 becomes the next digit in our result. 
Result so far: 10031.921
If we take 51 away from 80, we end up with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Advancing to step 10:
51 can be fit into 290 5 times, resulting in a remainder of 35.
The next digit of our result is 5. 
Result so far: 10031.9215
The remainder is 35 after subtracting 255 from 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Moving on to step 11:
The number 51 fits into 350 6 times, leaving a remainder of 44.
Put 6 as the next digit of the answer. 
Result so far: 10031.92156
Subtract 306 from 350 to get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Step 12:
51 goes into 440 8 times with a remainder of 32.
Put 8 as the next digit of the answer. 
Result so far: 10031.921568
Subtracting 408 from 440 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 13:
If we divide 320 by 51, we get 6 and a remainder of 14.
Record the quotient 6 as the next digit in the result. 
Result so far: 10031.9215686
Deduct 306 from 320 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 14:
51 can be fit into 140 2 times, resulting in a remainder of 38.
Write down 2 as next digit of the result. 
Result so far: 10031.92156862
If we take 102 away from 140, we end up with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

The final result is 10031.92156862 with a remainder of 3.8e-08.