We look at the division of 51428536 by 599 
The aim is to understand the frequency of 599 in 51428536.

Advancing to step 1:
The number 599 fits into 5 0 times, leaving a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 599

Moving on to step 2:
The number 599 fits into 51 0 times, leaving a remainder of 51.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 51 to get 51.
Include the next digit (4) from the dividend after 51, then repeat: 514 / 599

Let's proceed to step 3:
When dividing 514 by 599, we get 0 with a remainder of 514.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 514 after subtracting 0 from 514.
Take the next digit (2) from the dividend and append it to 514, then repeat: 5142 / 599

Step 4:
599 can be fit into 5142 8 times, resulting in a remainder of 350.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Deduct 4792 from 5142 and we're left with 350.
Append the next digit (8) from the dividend to 350 and continue with: 3508 / 599

Moving on to step 5:
The number 599 fits into 3508 5 times, leaving a remainder of 513.
The number 5 becomes the next digit in our result. 
Result so far: 85.0
Deduct 2995 from 3508 and we're left with 513.
Bring next digit (5) of the dividend behind the 513 and repeat the process: 5135 / 599

Advancing to step 6:
5135 divided by 599 is 8 with a remainder of 343.
Record the quotient 8 as the next digit in the result. 
Result so far: 858.0
The remainder is 343 after subtracting 4792 from 5135.
Include the next digit (3) from the dividend after 343, then repeat: 3433 / 599

On to step 7:
If we divide 3433 by 599, we get 5 and a remainder of 438.
Put 5 as the next digit of the answer. 
Result so far: 8585.0
Deduct 2995 from 3433 and we're left with 438.
Include the next digit (6) from the dividend after 438, then repeat: 4386 / 599

On to step 8:
4386 divided by 599 is 7 with a remainder of 193.
The next digit of our result is 7. 
Result so far: 85857.0
The remainder is 193 after subtracting 4193 from 4386.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1930, and continue the process.

Let's proceed to step 9:
If we divide 1930 by 599, we get 3 and a remainder of 133.
The next digit of our result is 3. 
Result so far: 85857.3
Deduct 1797 from 1930 and we're left with 133.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1330, and continue the process.

Moving on to step 10:
1330 divided by 599 is 2 with a remainder of 132.
Write down 2 as next digit of the result. 
Result so far: 85857.32
If we take 1198 away from 1330, we end up with 132.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

Step 11:
599 goes into 1320 2 times with a remainder of 122.
Put 2 as the next digit of the answer. 
Result so far: 85857.322
The remainder is 122 after subtracting 1198 from 1320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

The final result is 85857.322 with a remainder of 0.0122.