54842557 divided by 990 
The aim is to understand the frequency of 990 in 54842557.

Going ahead to step 1:
5 divided by 990 is 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Bring next digit (4) of the dividend behind the 5 and repeat the process: 54 / 990

Moving on to step 2:
When dividing 54 by 990, we get 0 with a remainder of 54.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 54 to get 54.
Append the next digit (8) from the dividend to 54 and continue with: 548 / 990

Moving on to step 3:
If we divide 548 by 990, we get 0 and a remainder of 548.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 548 leaves us with 548.
Include the next digit (4) from the dividend after 548, then repeat: 5484 / 990

On to step 4:
990 goes into 5484 5 times with a remainder of 534.
Write down 5 as next digit of the result. 
Result so far: 5.0
Subtract 4950 from 5484 to get 534.
Include the next digit (2) from the dividend after 534, then repeat: 5342 / 990

Going ahead to step 5:
If we divide 5342 by 990, we get 5 and a remainder of 392.
Write down 5 as next digit of the result. 
Result so far: 55.0
The remainder is 392 after subtracting 4950 from 5342.
Append the next digit (5) from the dividend to 392 and continue with: 3925 / 990

Let's proceed to step 6:
The number 990 fits into 3925 3 times, leaving a remainder of 955.
Record the quotient 3 as the next digit in the result. 
Result so far: 553.0
If we subtract 2970 from 3925, we get 955.
Take the next digit (5) from the dividend and append it to 955, then repeat: 9555 / 990

Moving on to step 7:
The number 990 fits into 9555 9 times, leaving a remainder of 645.
Write down 9 as next digit of the result. 
Result so far: 5539.0
Subtracting 8910 from 9555 leaves us with 645.
Include the next digit (7) from the dividend after 645, then repeat: 6457 / 990

Going ahead to step 8:
The number 990 fits into 6457 6 times, leaving a remainder of 517.
The number 6 becomes the next digit in our result. 
Result so far: 55396.0
Subtract 5940 from 6457 to get 517.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5170, and continue the process.

Step 9:
990 goes into 5170 5 times with a remainder of 220.
The number 5 becomes the next digit in our result. 
Result so far: 55396.5
Subtracting 4950 from 5170 leaves us with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Let's proceed to step 10:
When dividing 2200 by 990, we get 2 with a remainder of 220.
Put 2 as the next digit of the answer. 
Result so far: 55396.52
If we subtract 1980 from 2200, we get 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Going ahead to step 11:
When dividing 2200 by 990, we get 2 with a remainder of 220.
Use 2 as the next digit of our solution. 
Result so far: 55396.522
If we take 1980 away from 2200, we end up with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

The final outcome is 55396.522, with a leftover of 0.022.