360403 ÷ 51 
The aim is to understand the frequency of 51 in 360403.

Step 1:
When dividing 3 by 51, we get 0 with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Bring next digit (6) of the dividend behind the 3 and repeat the process: 36 / 51

On to step 2:
51 goes into 36 0 times with a remainder of 36.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 36 leaves us with 36.
Include the next digit (0) from the dividend after 36, then repeat: 360 / 51

Moving on to step 3:
51 goes into 360 7 times with a remainder of 3.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Subtracting 357 from 360 leaves us with 3.
Append the next digit (4) from the dividend to 3 and continue with: 34 / 51

Going ahead to step 4:
When dividing 34 by 51, we get 0 with a remainder of 34.
Record the quotient 0 as the next digit in the result. 
Result so far: 70.0
Deduct 0 from 34 and we're left with 34.
Include the next digit (0) from the dividend after 34, then repeat: 340 / 51

Moving on to step 5:
When dividing 340 by 51, we get 6 with a remainder of 34.
Record the quotient 6 as the next digit in the result. 
Result so far: 706.0
Deduct 306 from 340 and we're left with 34.
Grab the next digit (3) from the dividend, add it to 34, then carry on: 343 / 51

On to step 6:
The number 51 fits into 343 6 times, leaving a remainder of 37.
Write down 6 as next digit of the result. 
Result so far: 7066.0
Subtracting 306 from 343 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.

Step 7:
370 divided by 51 is 7 with a remainder of 13.
Put 7 as the next digit of the answer. 
Result so far: 7066.7
Subtracting 357 from 370 leaves us with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

On to step 8:
When dividing 130 by 51, we get 2 with a remainder of 28.
The number 2 becomes the next digit in our result. 
Result so far: 7066.72
Subtracting 102 from 130 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 9:
280 divided by 51 is 5 with a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 7066.725
Subtract 255 from 280 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Step 10:
The number 51 fits into 250 4 times, leaving a remainder of 46.
Record the quotient 4 as the next digit in the result. 
Result so far: 7066.7254
The remainder is 46 after subtracting 204 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 11:
When dividing 460 by 51, we get 9 with a remainder of 1.
Write down 9 as next digit of the result. 
Result so far: 7066.72549
If we take 459 away from 460, we end up 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.

Let's proceed to step 12:
If we divide 10 by 51, we get 0 and a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 7066.72549
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 13:
If we divide 100 by 51, we get 1 and a remainder of 49.
The number 1 becomes the next digit in our result. 
Result so far: 7066.7254901
If we take 51 away from 100, we end up 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.

Step 14:
The number 51 fits into 490 9 times, leaving a remainder of 31.
The number 9 becomes the next digit in our result. 
Result so far: 7066.72549019
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.

The final result is 7066.72549019 with a remainder of 3.1e-08.