We divide 99921202 by 30
The aim is to understand the frequency of 30 in 99921202.

Let's proceed to step 1:
If we divide 9 by 30, we get 0 and a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 30

Going ahead to step 2:
When dividing 99 by 30, we get 3 with a remainder of 9.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Subtract 90 from 99 to get 9.
Take the next digit (9) from the dividend and append it to 9, then repeat: 99 / 30

Going ahead to step 3:
30 can be fit into 99 3 times, resulting in a remainder of 9.
Put 3 as the next digit of the answer. 
Result so far: 33.0
Deduct 90 from 99 and we're left with 9.
Append the next digit (2) from the dividend to 9 and continue with: 92 / 30

Step 4:
The number 30 fits into 92 3 times, leaving a remainder of 2.
Record the quotient 3 as the next digit in the result. 
Result so far: 333.0
If we subtract 90 from 92, we get 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 30

Let's proceed to step 5:
30 can be fit into 21 0 times, resulting in a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 3330.0
Deduct 0 from 21 and we're left with 21.
Take the next digit (2) from the dividend and append it to 21, then repeat: 212 / 30

Going ahead to step 6:
If we divide 212 by 30, we get 7 and a remainder of 2.
Put 7 as the next digit of the answer. 
Result so far: 33307.0
If we take 210 away from 212, we end up with 2.
Append the next digit (0) from the dividend to 2 and continue with: 20 / 30

Let's proceed to step 7:
30 can be fit into 20 0 times, resulting in a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 333070.0
Subtracting 0 from 20 leaves us with 20.
Append the next digit (2) from the dividend to 20 and continue with: 202 / 30

Advancing to step 8:
If we divide 202 by 30, we get 6 and a remainder of 22.
The number 6 becomes the next digit in our result. 
Result so far: 3330706.0
If we subtract 180 from 202, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Advancing to step 9:
When dividing 220 by 30, we get 7 with a remainder of 10.
Use 7 as the next digit of our solution. 
Result so far: 3330706.7
Deduct 210 from 220 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 10:
If we divide 100 by 30, we get 3 and a remainder of 10.
Write down 3 as next digit of the result. 
Result so far: 3330706.73
The remainder is 10 after subtracting 90 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 11:
When dividing 100 by 30, we get 3 with a remainder of 10.
Record the quotient 3 as the next digit in the result. 
Result so far: 3330706.733
Deduct 90 from 100 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Our division results in 3330706.733 with a remaining 0.001.