78258355 divided by 599 
The aim is to understand the frequency of 599 in 78258355.

Going ahead to step 1:
When dividing 7 by 599, we get 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 599

Going ahead to step 2:
599 can be fit into 78 0 times, resulting in a remainder of 78.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 78 after subtracting 0 from 78.
Include the next digit (2) from the dividend after 78, then repeat: 782 / 599

On to step 3:
782 divided by 599 is 1 with a remainder of 183.
The next digit of our result is 1. 
Result so far: 1.0
If we take 599 away from 782, we end up with 183.
Append the next digit (5) from the dividend to 183 and continue with: 1835 / 599

Advancing to step 4:
599 goes into 1835 3 times with a remainder of 38.
Put 3 as the next digit of the answer. 
Result so far: 13.0
The remainder is 38 after subtracting 1797 from 1835.
Take the next digit (8) from the dividend and append it to 38, then repeat: 388 / 599

Going ahead to step 5:
388 divided by 599 is 0 with a remainder of 388.
Write down 0 as next digit of the result. 
Result so far: 130.0
If we take 0 away from 388, we end up with 388.
Append the next digit (3) from the dividend to 388 and continue with: 3883 / 599

Let's proceed to step 6:
3883 divided by 599 is 6 with a remainder of 289.
Put 6 as the next digit of the answer. 
Result so far: 1306.0
If we subtract 3594 from 3883, we get 289.
Append the next digit (5) from the dividend to 289 and continue with: 2895 / 599

Moving on to step 7:
599 can be fit into 2895 4 times, resulting in a remainder of 499.
Record the quotient 4 as the next digit in the result. 
Result so far: 13064.0
Subtract 2396 from 2895 to get 499.
Bring next digit (5) of the dividend behind the 499 and repeat the process: 4995 / 599

Let's proceed to step 8:
The number 599 fits into 4995 8 times, leaving a remainder of 203.
The number 8 becomes the next digit in our result. 
Result so far: 130648.0
Deduct 4792 from 4995 and we're left with 203.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2030, and continue the process.

Going ahead to step 9:
2030 divided by 599 is 3 with a remainder of 233.
Put 3 as the next digit of the answer. 
Result so far: 130648.3
The remainder is 233 after subtracting 1797 from 2030.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2330, and continue the process.

Let's proceed to step 10:
If we divide 2330 by 599, we get 3 and a remainder of 533.
The next digit of our result is 3. 
Result so far: 130648.33
The remainder is 533 after subtracting 1797 from 2330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5330, and continue the process.

The quotient of the division is 130648.33, and the remainder is 0.533.