We're dividing 530628 by 51 
The aim is to understand the frequency of 51 in 530628.

Step 1:
5 divided by 51 is 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Include the next digit (3) from the dividend after 5, then repeat: 53 / 51

Step 2:
If we divide 53 by 51, we get 1 and a remainder of 2.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 51 from 53 to get 2.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 51

Moving on to step 3:
The number 51 fits into 20 0 times, leaving a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Subtract 0 from 20 to get 20.
Append the next digit (6) from the dividend to 20 and continue with: 206 / 51

Going ahead to step 4:
The number 51 fits into 206 4 times, leaving a remainder of 2.
Record the quotient 4 as the next digit in the result. 
Result so far: 104.0
The remainder is 2 after subtracting 204 from 206.
Take the next digit (2) from the dividend and append it to 2, then repeat: 22 / 51

On to step 5:
When dividing 22 by 51, we get 0 with a remainder of 22.
Record the quotient 0 as the next digit in the result. 
Result so far: 1040.0
If we take 0 away from 22, we end up with 22.
Fetch the next digit (8) from the dividend, attach it to 22 and continue: 228 / 51

Moving on to step 6:
When dividing 228 by 51, we get 4 with a remainder of 24.
The next digit of our result is 4. 
Result so far: 10404.0
Subtract 204 from 228 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 7:
If we divide 240 by 51, we get 4 and a remainder of 36.
Put 4 as the next digit of the answer. 
Result so far: 10404.4
The remainder is 36 after subtracting 204 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 8:
When dividing 360 by 51, we get 7 with a remainder of 3.
Put 7 as the next digit of the answer. 
Result so far: 10404.47
Deduct 357 from 360 and we're left with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 9:
When dividing 30 by 51, we get 0 with a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 10404.47
Subtract 0 from 30 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 10:
When dividing 300 by 51, we get 5 with a remainder of 45.
The next digit of our result is 5. 
Result so far: 10404.4705
The remainder is 45 after subtracting 255 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Moving on to step 11:
If we divide 450 by 51, we get 8 and a remainder of 42.
Record the quotient 8 as the next digit in the result. 
Result so far: 10404.47058
The remainder is 42 after subtracting 408 from 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Going ahead to step 12:
If we divide 420 by 51, we get 8 and a remainder of 12.
The next digit of our result is 8. 
Result so far: 10404.470588
If we take 408 away from 420, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Our division results in 10404.470588 with a remaining 1.2e-06.