748839 divided by 51 
The aim is to understand the frequency of 51 in 748839.

Let's proceed to step 1:
7 divided by 51 is 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Bring next digit (4) of the dividend behind the 7 and repeat the process: 74 / 51

Moving on to step 2:
74 divided by 51 is 1 with a remainder of 23.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 51 from 74 and we're left with 23.
Fetch the next digit (8) from the dividend, attach it to 23 and continue: 238 / 51

Let's proceed to step 3:
238 divided by 51 is 4 with a remainder of 34.
The number 4 becomes the next digit in our result. 
Result so far: 14.0
If we subtract 204 from 238, we get 34.
Take the next digit (8) from the dividend and append it to 34, then repeat: 348 / 51

Going ahead to step 4:
51 goes into 348 6 times with a remainder of 42.
Write down 6 as next digit of the result. 
Result so far: 146.0
Deduct 306 from 348 and we're left with 42.
Include the next digit (3) from the dividend after 42, then repeat: 423 / 51

Let's proceed to step 5:
If we divide 423 by 51, we get 8 and a remainder of 15.
Put 8 as the next digit of the answer. 
Result so far: 1468.0
The remainder is 15 after subtracting 408 from 423.
Grab the next digit (9) from the dividend, add it to 15, then carry on: 159 / 51

Step 6:
The number 51 fits into 159 3 times, leaving a remainder of 6.
Write down 3 as next digit of the result. 
Result so far: 14683.0
The remainder is 6 after subtracting 153 from 159.
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 7:
60 divided by 51 is 1 with a remainder of 9.
Write down 1 as next digit of the result. 
Result so far: 14683.1
Subtracting 51 from 60 leaves us 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.

Let's proceed to step 8:
If we divide 90 by 51, we get 1 and a remainder of 39.
Record the quotient 1 as the next digit in the result. 
Result so far: 14683.11
Subtract 51 from 90 to get 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 14683.11 with a remaining 0.039.