99395878 divided by 235 
The aim is to understand the frequency of 235 in 99395878.

Advancing to step 1:
When dividing 9 by 235, we get 0 with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Fetch the next digit (9) from the dividend, attach it to 9 and continue: 99 / 235

Step 2:
235 goes into 99 0 times with a remainder of 99.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 99 leaves us with 99.
Fetch the next digit (3) from the dividend, attach it to 99 and continue: 993 / 235

Step 3:
993 divided by 235 is 4 with a remainder of 53.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtracting 940 from 993 leaves us with 53.
Include the next digit (9) from the dividend after 53, then repeat: 539 / 235

Moving on to step 4:
235 can be fit into 539 2 times, resulting in a remainder of 69.
The number 2 becomes the next digit in our result. 
Result so far: 42.0
Deduct 470 from 539 and we're left with 69.
Append the next digit (5) from the dividend to 69 and continue with: 695 / 235

Moving on to step 5:
235 goes into 695 2 times with a remainder of 225.
Record the quotient 2 as the next digit in the result. 
Result so far: 422.0
Subtracting 470 from 695 leaves us with 225.
Grab the next digit (8) from the dividend, add it to 225, then carry on: 2258 / 235

Going ahead to step 6:
235 can be fit into 2258 9 times, resulting in a remainder of 143.
Use 9 as the next digit of our solution. 
Result so far: 4229.0
If we take 2115 away from 2258, we end up with 143.
Take the next digit (7) from the dividend and append it to 143, then repeat: 1437 / 235

Going ahead to step 7:
235 goes into 1437 6 times with a remainder of 27.
Use 6 as the next digit of our solution. 
Result so far: 42296.0
Subtract 1410 from 1437 to get 27.
Include the next digit (8) from the dividend after 27, then repeat: 278 / 235

Let's proceed to step 8:
If we divide 278 by 235, we get 1 and a remainder of 43.
The next digit of our result is 1. 
Result so far: 422961.0
The remainder is 43 after subtracting 235 from 278.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

Going ahead to step 9:
When dividing 430 by 235, we get 1 with a remainder of 195.
The next digit of our result is 1. 
Result so far: 422961.1
Deduct 235 from 430 and we're left with 195.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

Step 10:
When dividing 1950 by 235, we get 8 with a remainder of 70.
Record the quotient 8 as the next digit in the result. 
Result so far: 422961.18
Deduct 1880 from 1950 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 11:
When dividing 700 by 235, we get 2 with a remainder of 230.
Record the quotient 2 as the next digit in the result. 
Result so far: 422961.182
If we take 470 away from 700, we end up with 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Going ahead to step 12:
235 can be fit into 2300 9 times, resulting in a remainder of 185.
The next digit of our result is 9. 
Result so far: 422961.1829
Deduct 2115 from 2300 and we're left with 185.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1850, and continue the process.

Let's proceed to step 13:
When dividing 1850 by 235, we get 7 with a remainder of 205.
The next digit of our result is 7. 
Result so far: 422961.18297
If we take 1645 away from 1850, we end up with 205.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2050, and continue the process.

Step 14:
235 can be fit into 2050 8 times, resulting in a remainder of 170.
The next digit of our result is 8. 
Result so far: 422961.182978
Subtract 1880 from 2050 to get 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Step 15:
1700 divided by 235 is 7 with a remainder of 55.
Put 7 as the next digit of the answer. 
Result so far: 422961.1829787
Subtract 1645 from 1700 to get 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Advancing to step 16:
235 goes into 550 2 times with a remainder of 80.
Put 2 as the next digit of the answer. 
Result so far: 422961.18297872
If we subtract 470 from 550, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

The quotient of the division is 422961.18297872, and the remainder is 8e-08.