984990 divided by 16 
The aim is to understand the frequency of 16 in 984990.

Let's proceed to step 1:
When dividing 9 by 16, we get 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Grab the next digit (8) from the dividend, add it to 9, then carry on: 98 / 16

Going ahead to step 2:
98 divided by 16 is 6 with a remainder of 2.
The next digit of our result is 6. 
Result so far: 6.0
Subtract 96 from 98 to get 2.
Take the next digit (4) from the dividend and append it to 2, then repeat: 24 / 16

Moving on to step 3:
When dividing 24 by 16, we get 1 with a remainder of 8.
Record the quotient 1 as the next digit in the result. 
Result so far: 61.0
If we subtract 16 from 24, we get 8.
Take the next digit (9) from the dividend and append it to 8, then repeat: 89 / 16

Let's proceed to step 4:
16 can be fit into 89 5 times, resulting in a remainder of 9.
Record the quotient 5 as the next digit in the result. 
Result so far: 615.0
If we take 80 away from 89, we end up with 9.
Bring next digit (9) of the dividend behind the 9 and repeat the process: 99 / 16

Step 5:
99 divided by 16 is 6 with a remainder of 3.
The next digit of our result is 6. 
Result so far: 6156.0
If we subtract 96 from 99, we get 3.
Bring next digit (0) of the dividend behind the 3 and repeat the process: 30 / 16

Step 6:
16 goes into 30 1 times with a remainder of 14.
The next digit of our result is 1. 
Result so far: 61561.0
Deduct 16 from 30 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 7:
140 divided by 16 is 8 with a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 61561.8
Subtract 128 from 140 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 8:
16 can be fit into 120 7 times, resulting in a remainder of 8.
Write down 7 as next digit of the result. 
Result so far: 61561.87
If we subtract 112 from 120, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 9:
80 divided by 16 is 5 with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 61561.875
The remainder is 0 after subtracting 80 from 80.
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 10:
If we divide 0 by 16, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 61561.875
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.

Step 11:
When dividing 0 by 16, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 61561.875
Deduct 0 from 0 and we're left 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 61561.875 with a remainder of 0.0.