428898 divided by 990 
The aim is to understand the frequency of 990 in 428898.

Advancing to step 1:
990 can be fit into 4 0 times, resulting in a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Bring next digit (2) of the dividend behind the 4 and repeat the process: 42 / 990

Let's proceed to step 2:
990 can be fit into 42 0 times, resulting in a remainder of 42.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 42, we end up with 42.
Grab the next digit (8) from the dividend, add it to 42, then carry on: 428 / 990

Step 3:
The number 990 fits into 428 0 times, leaving a remainder of 428.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 428 leaves us with 428.
Fetch the next digit (8) from the dividend, attach it to 428 and continue: 4288 / 990

Let's proceed to step 4:
990 goes into 4288 4 times with a remainder of 328.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtracting 3960 from 4288 leaves us with 328.
Take the next digit (9) from the dividend and append it to 328, then repeat: 3289 / 990

Advancing to step 5:
3289 divided by 990 is 3 with a remainder of 319.
The number 3 becomes the next digit in our result. 
Result so far: 43.0
Subtract 2970 from 3289 to get 319.
Take the next digit (8) from the dividend and append it to 319, then repeat: 3198 / 990

Advancing to step 6:
990 goes into 3198 3 times with a remainder of 228.
Use 3 as the next digit of our solution. 
Result so far: 433.0
If we subtract 2970 from 3198, we get 228.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

On to step 7:
2280 divided by 990 is 2 with a remainder of 300.
The next digit of our result is 2. 
Result so far: 433.2
Subtracting 1980 from 2280 leaves us with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Step 8:
3000 divided by 990 is 3 with a remainder of 30.
Record the quotient 3 as the next digit in the result. 
Result so far: 433.23
Deduct 2970 from 3000 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 9:
The number 990 fits into 300 0 times, leaving a remainder of 300.
Put 0 as the next digit of the answer. 
Result so far: 433.23
Subtracting 0 from 300 leaves us with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

On to step 10:
When dividing 3000 by 990, we get 3 with a remainder of 30.
Write down 3 as next digit of the result. 
Result so far: 433.2303
If we subtract 2970 from 3000, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 11:
990 can be fit into 300 0 times, resulting in a remainder of 300.
Record the quotient 0 as the next digit in the result. 
Result so far: 433.2303
Deduct 0 from 300 and we're left with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Going ahead to step 12:
When dividing 3000 by 990, we get 3 with a remainder of 30.
Put 3 as the next digit of the answer. 
Result so far: 433.230303
If we take 2970 away from 3000, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 13:
When dividing 300 by 990, we get 0 with a remainder of 300.
Record the quotient 0 as the next digit in the result. 
Result so far: 433.230303
Subtract 0 from 300 to get 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Step 14:
3000 divided by 990 is 3 with a remainder of 30.
Use 3 as the next digit of our solution. 
Result so far: 433.23030303
Subtracting 2970 from 3000 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

After the division, we end up with 433.23030303 and a remainder of 3e-08.