We look at the division of 99378309 by 201 
The aim is to understand the frequency of 201 in 99378309.

Let's proceed to step 1:
9 divided by 201 is 0 with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Append the next digit (9) from the dividend to 9 and continue with: 99 / 201

Going ahead to step 2:
The number 201 fits into 99 0 times, leaving a remainder of 99.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 99 and we're left with 99.
Take the next digit (3) from the dividend and append it to 99, then repeat: 993 / 201

Moving on to step 3:
The number 201 fits into 993 4 times, leaving a remainder of 189.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtract 804 from 993 to get 189.
Take the next digit (7) from the dividend and append it to 189, then repeat: 1897 / 201

Going ahead to step 4:
When dividing 1897 by 201, we get 9 with a remainder of 88.
Record the quotient 9 as the next digit in the result. 
Result so far: 49.0
The remainder is 88 after subtracting 1809 from 1897.
Take the next digit (8) from the dividend and append it to 88, then repeat: 888 / 201

Going ahead to step 5:
201 can be fit into 888 4 times, resulting in a remainder of 84.
Use 4 as the next digit of our solution. 
Result so far: 494.0
Subtracting 804 from 888 leaves us with 84.
Append the next digit (3) from the dividend to 84 and continue with: 843 / 201

Let's proceed to step 6:
When dividing 843 by 201, we get 4 with a remainder of 39.
Write down 4 as next digit of the result. 
Result so far: 4944.0
Subtracting 804 from 843 leaves us with 39.
Append the next digit (0) from the dividend to 39 and continue with: 390 / 201

Going ahead to step 7:
201 can be fit into 390 1 times, resulting in a remainder of 189.
The next digit of our result is 1. 
Result so far: 49441.0
Deduct 201 from 390 and we're left with 189.
Append the next digit (9) from the dividend to 189 and continue with: 1899 / 201

Let's proceed to step 8:
201 goes into 1899 9 times with a remainder of 90.
Write down 9 as next digit of the result. 
Result so far: 494419.0
If we subtract 1809 from 1899, we get 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Advancing to step 9:
When dividing 900 by 201, we get 4 with a remainder of 96.
Write down 4 as next digit of the result. 
Result so far: 494419.4
Subtracting 804 from 900 leaves us with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

On to step 10:
960 divided by 201 is 4 with a remainder of 156.
The number 4 becomes the next digit in our result. 
Result so far: 494419.44
The remainder is 156 after subtracting 804 from 960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

The final result is 494419.44 with a remainder of 0.156.