Let's divide 85309399 by 508
The aim is to understand the frequency of 508 in 85309399.

Advancing to step 1:
8 divided by 508 is 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Append the next digit (5) from the dividend to 8 and continue with: 85 / 508

Let's proceed to step 2:
508 can be fit into 85 0 times, resulting in a remainder of 85.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 85, we end up with 85.
Include the next digit (3) from the dividend after 85, then repeat: 853 / 508

Advancing to step 3:
853 divided by 508 is 1 with a remainder of 345.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 508 from 853 leaves us with 345.
Grab the next digit (0) from the dividend, add it to 345, then carry on: 3450 / 508

Moving on to step 4:
When dividing 3450 by 508, we get 6 with a remainder of 402.
The number 6 becomes the next digit in our result. 
Result so far: 16.0
Subtract 3048 from 3450 to get 402.
Take the next digit (9) from the dividend and append it to 402, then repeat: 4029 / 508

Step 5:
If we divide 4029 by 508, we get 7 and a remainder of 473.
The next digit of our result is 7. 
Result so far: 167.0
Subtract 3556 from 4029 to get 473.
Grab the next digit (3) from the dividend, add it to 473, then carry on: 4733 / 508

Advancing to step 6:
508 goes into 4733 9 times with a remainder of 161.
Put 9 as the next digit of the answer. 
Result so far: 1679.0
The remainder is 161 after subtracting 4572 from 4733.
Include the next digit (9) from the dividend after 161, then repeat: 1619 / 508

Moving on to step 7:
508 can be fit into 1619 3 times, resulting in a remainder of 95.
The next digit of our result is 3. 
Result so far: 16793.0
The remainder is 95 after subtracting 1524 from 1619.
Append the next digit (9) from the dividend to 95 and continue with: 959 / 508

Moving on to step 8:
959 divided by 508 is 1 with a remainder of 451.
Put 1 as the next digit of the answer. 
Result so far: 167931.0
The remainder is 451 after subtracting 508 from 959.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4510, and continue the process.

On to step 9:
When dividing 4510 by 508, we get 8 with a remainder of 446.
Put 8 as the next digit of the answer. 
Result so far: 167931.8
Subtract 4064 from 4510 to get 446.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4460, and continue the process.

Going ahead to step 10:
4460 divided by 508 is 8 with a remainder of 396.
Use 8 as the next digit of our solution. 
Result so far: 167931.88
The remainder is 396 after subtracting 4064 from 4460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3960, and continue the process.

The final outcome is 167931.88, with a leftover of 0.396.