253930 ÷ 51 
The aim is to understand the frequency of 51 in 253930.

Going ahead to step 1:
2 divided by 51 is 0 with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Grab the next digit (5) from the dividend, add it to 2, then carry on: 25 / 51

Moving on to step 2:
51 goes into 25 0 times with a remainder of 25.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 25 after subtracting 0 from 25.
Fetch the next digit (3) from the dividend, attach it to 25 and continue: 253 / 51

On to step 3:
253 divided by 51 is 4 with a remainder of 49.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtracting 204 from 253 leaves us with 49.
Include the next digit (9) from the dividend after 49, then repeat: 499 / 51

Step 4:
When dividing 499 by 51, we get 9 with a remainder of 40.
Record the quotient 9 as the next digit in the result. 
Result so far: 49.0
Subtract 459 from 499 to get 40.
Fetch the next digit (3) from the dividend, attach it to 40 and continue: 403 / 51

On to step 5:
403 divided by 51 is 7 with a remainder of 46.
Record the quotient 7 as the next digit in the result. 
Result so far: 497.0
Subtract 357 from 403 to get 46.
Bring next digit (0) of the dividend behind the 46 and repeat the process: 460 / 51

Advancing to step 6:
51 can be fit into 460 9 times, resulting in a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 4979.0
Subtracting 459 from 460 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 7:
10 divided by 51 is 0 with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 4979.0
Deduct 0 from 10 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 8:
If we divide 100 by 51, we get 1 and a remainder of 49.
Put 1 as the next digit of the answer. 
Result so far: 4979.01
Deduct 51 from 100 and we're left with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

On to step 9:
When dividing 490 by 51, we get 9 with a remainder of 31.
Put 9 as the next digit of the answer. 
Result so far: 4979.019
Subtract 459 from 490 to get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

On to step 10:
When dividing 310 by 51, we get 6 with a remainder of 4.
The next digit of our result is 6. 
Result so far: 4979.0196
Subtract 306 from 310 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 11:
40 divided by 51 is 0 with a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 4979.0196
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 12:
If we divide 400 by 51, we get 7 and a remainder of 43.
Use 7 as the next digit of our solution. 
Result so far: 4979.019607
If we subtract 357 from 400, we get 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Moving on to step 13:
51 goes into 430 8 times with a remainder of 22.
Record the quotient 8 as the next digit in the result. 
Result so far: 4979.0196078
Deduct 408 from 430 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Step 14:
The number 51 fits into 220 4 times, leaving a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 4979.01960784
Deduct 204 from 220 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Our division results in 4979.01960784 with a remaining 1.6e-08.