Let's divide 990354 by 3
The aim is to understand the frequency of 3 in 990354.

Moving on to step 1:
The number 3 fits into 9 3 times, leaving a remainder of 0.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtracting 9 from 9 leaves us with 0.
Grab the next digit (9) from the dividend, add it to 0, then carry on: 9 / 3

On to step 2:
3 goes into 9 3 times with a remainder of 0.
Put 3 as the next digit of the answer. 
Result so far: 33.0
If we subtract 9 from 9, we get 0.
Append the next digit (0) from the dividend to 0 and continue with: 0 / 3

Let's proceed to step 3:
3 goes into 0 0 times with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 330.0
The remainder is 0 after subtracting 0 from 0.
Grab the next digit (3) from the dividend, add it to 0, then carry on: 3 / 3

Let's proceed to step 4:
3 divided by 3 is 1 with a remainder of 0.
The next digit of our result is 1. 
Result so far: 3301.0
If we take 3 away from 3, we end up with 0.
Take the next digit (5) from the dividend and append it to 0, then repeat: 5 / 3

Going ahead to step 5:
When dividing 5 by 3, we get 1 with a remainder of 2.
The number 1 becomes the next digit in our result. 
Result so far: 33011.0
Subtract 3 from 5 to get 2.
Fetch the next digit (4) from the dividend, attach it to 2 and continue: 24 / 3

Step 6:
The number 3 fits into 24 8 times, leaving a remainder of 0.
Write down 8 as next digit of the result. 
Result so far: 330118.0
Subtract 24 from 24 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 7:
3 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 330118.0
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 8:
When dividing 0 by 3, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 330118.0
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final result is 330118.0 with a remainder of 0.0.