We look at the division of 99285529 by 429 
The aim is to understand the frequency of 429 in 99285529.

Moving on to step 1:
429 goes into 9 0 times with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Include the next digit (9) from the dividend after 9, then repeat: 99 / 429

Moving on to step 2:
429 goes into 99 0 times with a remainder of 99.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 99 after subtracting 0 from 99.
Append the next digit (2) from the dividend to 99 and continue with: 992 / 429

Step 3:
992 divided by 429 is 2 with a remainder of 134.
The next digit of our result is 2. 
Result so far: 2.0
Subtracting 858 from 992 leaves us with 134.
Include the next digit (8) from the dividend after 134, then repeat: 1348 / 429

Advancing to step 4:
When dividing 1348 by 429, we get 3 with a remainder of 61.
Record the quotient 3 as the next digit in the result. 
Result so far: 23.0
If we subtract 1287 from 1348, we get 61.
Fetch the next digit (5) from the dividend, attach it to 61 and continue: 615 / 429

On to step 5:
When dividing 615 by 429, we get 1 with a remainder of 186.
The number 1 becomes the next digit in our result. 
Result so far: 231.0
If we subtract 429 from 615, we get 186.
Bring next digit (5) of the dividend behind the 186 and repeat the process: 1865 / 429

On to step 6:
429 can be fit into 1865 4 times, resulting in a remainder of 149.
Write down 4 as next digit of the result. 
Result so far: 2314.0
If we take 1716 away from 1865, we end up with 149.
Fetch the next digit (2) from the dividend, attach it to 149 and continue: 1492 / 429

Moving on to step 7:
1492 divided by 429 is 3 with a remainder of 205.
The number 3 becomes the next digit in our result. 
Result so far: 23143.0
If we subtract 1287 from 1492, we get 205.
Append the next digit (9) from the dividend to 205 and continue with: 2059 / 429

Advancing to step 8:
The number 429 fits into 2059 4 times, leaving a remainder of 343.
The number 4 becomes the next digit in our result. 
Result so far: 231434.0
If we take 1716 away from 2059, we end up with 343.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3430, and continue the process.

Advancing to step 9:
429 goes into 3430 7 times with a remainder of 427.
Write down 7 as next digit of the result. 
Result so far: 231434.7
Subtracting 3003 from 3430 leaves us with 427.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4270, and continue the process.

Step 10:
4270 divided by 429 is 9 with a remainder of 409.
Put 9 as the next digit of the answer. 
Result so far: 231434.79
Subtracting 3861 from 4270 leaves us with 409.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4090, and continue the process.

Moving on to step 11:
429 goes into 4090 9 times with a remainder of 229.
The next digit of our result is 9. 
Result so far: 231434.799
Subtracting 3861 from 4090 leaves us with 229.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2290, and continue the process.

The final result is 231434.799 with a remainder of 0.0229.