We're dividing 99975098 by 900 
The aim is to understand the frequency of 900 in 99975098.

Step 1:
When dividing 9 by 900, we get 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Include the next digit (9) from the dividend after 9, then repeat: 99 / 900

Advancing to step 2:
When dividing 99 by 900, we get 0 with a remainder of 99.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 99 leaves us with 99.
Include the next digit (9) from the dividend after 99, then repeat: 999 / 900

Going ahead to step 3:
If we divide 999 by 900, we get 1 and a remainder of 99.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 99 after subtracting 900 from 999.
Append the next digit (7) from the dividend to 99 and continue with: 997 / 900

Moving on to step 4:
The number 900 fits into 997 1 times, leaving a remainder of 97.
Write down 1 as next digit of the result. 
Result so far: 11.0
Deduct 900 from 997 and we're left with 97.
Grab the next digit (5) from the dividend, add it to 97, then carry on: 975 / 900

On to step 5:
If we divide 975 by 900, we get 1 and a remainder of 75.
The next digit of our result is 1. 
Result so far: 111.0
Deduct 900 from 975 and we're left with 75.
Grab the next digit (0) from the dividend, add it to 75, then carry on: 750 / 900

On to step 6:
900 goes into 750 0 times with a remainder of 750.
Put 0 as the next digit of the answer. 
Result so far: 1110.0
If we subtract 0 from 750, we get 750.
Fetch the next digit (9) from the dividend, attach it to 750 and continue: 7509 / 900

Moving on to step 7:
If we divide 7509 by 900, we get 8 and a remainder of 309.
Put 8 as the next digit of the answer. 
Result so far: 11108.0
If we take 7200 away from 7509, we end up with 309.
Grab the next digit (8) from the dividend, add it to 309, then carry on: 3098 / 900

Let's proceed to step 8:
When dividing 3098 by 900, we get 3 with a remainder of 398.
The number 3 becomes the next digit in our result. 
Result so far: 111083.0
If we take 2700 away from 3098, we end up with 398.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3980, and continue the process.

Going ahead to step 9:
900 can be fit into 3980 4 times, resulting in a remainder of 380.
The number 4 becomes the next digit in our result. 
Result so far: 111083.4
Subtracting 3600 from 3980 leaves us with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Let's proceed to step 10:
If we divide 3800 by 900, we get 4 and a remainder of 200.
Put 4 as the next digit of the answer. 
Result so far: 111083.44
Subtract 3600 from 3800 to get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

The quotient of the division is 111083.44, and the remainder is 0.2.