We're dividing 51684617 by 257 
The aim is to understand the frequency of 257 in 51684617.

Let's proceed to step 1:
The number 257 fits into 5 0 times, leaving a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 257

Let's proceed to step 2:
51 divided by 257 is 0 with a remainder of 51.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 51, we get 51.
Bring next digit (6) of the dividend behind the 51 and repeat the process: 516 / 257

Step 3:
257 goes into 516 2 times with a remainder of 2.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Deduct 514 from 516 and we're left with 2.
Fetch the next digit (8) from the dividend, attach it to 2 and continue: 28 / 257

On to step 4:
The number 257 fits into 28 0 times, leaving a remainder of 28.
Write down 0 as next digit of the result. 
Result so far: 20.0
Subtract 0 from 28 to get 28.
Append the next digit (4) from the dividend to 28 and continue with: 284 / 257

Going ahead to step 5:
The number 257 fits into 284 1 times, leaving a remainder of 27.
The next digit of our result is 1. 
Result so far: 201.0
Subtract 257 from 284 to get 27.
Append the next digit (6) from the dividend to 27 and continue with: 276 / 257

On to step 6:
The number 257 fits into 276 1 times, leaving a remainder of 19.
Use 1 as the next digit of our solution. 
Result so far: 2011.0
Subtracting 257 from 276 leaves us with 19.
Append the next digit (1) from the dividend to 19 and continue with: 191 / 257

Going ahead to step 7:
257 goes into 191 0 times with a remainder of 191.
Write down 0 as next digit of the result. 
Result so far: 20110.0
If we subtract 0 from 191, we get 191.
Append the next digit (7) from the dividend to 191 and continue with: 1917 / 257

Step 8:
257 goes into 1917 7 times with a remainder of 118.
The next digit of our result is 7. 
Result so far: 201107.0
The remainder is 118 after subtracting 1799 from 1917.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1180, and continue the process.

Step 9:
When dividing 1180 by 257, we get 4 with a remainder of 152.
The number 4 becomes the next digit in our result. 
Result so far: 201107.4
If we take 1028 away from 1180, we end up with 152.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

Step 10:
257 can be fit into 1520 5 times, resulting in a remainder of 235.
Write down 5 as next digit of the result. 
Result so far: 201107.45
If we subtract 1285 from 1520, we get 235.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2350, and continue the process.

Let's proceed to step 11:
257 goes into 2350 9 times with a remainder of 37.
Write down 9 as next digit of the result. 
Result so far: 201107.459
Subtracting 2313 from 2350 leaves us with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Moving on to step 12:
If we divide 370 by 257, we get 1 and a remainder of 113.
Use 1 as the next digit of our solution. 
Result so far: 201107.4591
If we subtract 257 from 370, we get 113.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1130, and continue the process.

Step 13:
If we divide 1130 by 257, we get 4 and a remainder of 102.
The number 4 becomes the next digit in our result. 
Result so far: 201107.45914
Subtract 1028 from 1130 to get 102.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

Step 14:
1020 divided by 257 is 3 with a remainder of 249.
Use 3 as the next digit of our solution. 
Result so far: 201107.459143
If we subtract 771 from 1020, we get 249.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2490, and continue the process.

Advancing to step 15:
When dividing 2490 by 257, we get 9 with a remainder of 177.
Record the quotient 9 as the next digit in the result. 
Result so far: 201107.4591439
Subtract 2313 from 2490 to get 177.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1770, and continue the process.

Let's proceed to step 16:
1770 divided by 257 is 6 with a remainder of 228.
Record the quotient 6 as the next digit in the result. 
Result so far: 201107.45914396
Deduct 1542 from 1770 and we're left with 228.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

The final outcome is 201107.45914396, with a leftover of 2.28e-07.