63075534 ÷ 990 
The aim is to understand the frequency of 990 in 63075534.

Going ahead to step 1:
990 goes into 6 0 times with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Take the next digit (3) from the dividend and append it to 6, then repeat: 63 / 990

Advancing to step 2:
If we divide 63 by 990, we get 0 and a remainder of 63.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 63 to get 63.
Grab the next digit (0) from the dividend, add it to 63, then carry on: 630 / 990

Step 3:
When dividing 630 by 990, we get 0 with a remainder of 630.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 630, we get 630.
Include the next digit (7) from the dividend after 630, then repeat: 6307 / 990

Advancing to step 4:
When dividing 6307 by 990, we get 6 with a remainder of 367.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Subtract 5940 from 6307 to get 367.
Bring next digit (5) of the dividend behind the 367 and repeat the process: 3675 / 990

On to step 5:
When dividing 3675 by 990, we get 3 with a remainder of 705.
Record the quotient 3 as the next digit in the result. 
Result so far: 63.0
If we subtract 2970 from 3675, we get 705.
Include the next digit (5) from the dividend after 705, then repeat: 7055 / 990

Step 6:
990 can be fit into 7055 7 times, resulting in a remainder of 125.
The next digit of our result is 7. 
Result so far: 637.0
Subtracting 6930 from 7055 leaves us with 125.
Bring next digit (3) of the dividend behind the 125 and repeat the process: 1253 / 990

Step 7:
When dividing 1253 by 990, we get 1 with a remainder of 263.
The number 1 becomes the next digit in our result. 
Result so far: 6371.0
Subtract 990 from 1253 to get 263.
Include the next digit (4) from the dividend after 263, then repeat: 2634 / 990

Going ahead to step 8:
The number 990 fits into 2634 2 times, leaving a remainder of 654.
The next digit of our result is 2. 
Result so far: 63712.0
Subtracting 1980 from 2634 leaves us with 654.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6540, and continue the process.

Going ahead to step 9:
If we divide 6540 by 990, we get 6 and a remainder of 600.
Use 6 as the next digit of our solution. 
Result so far: 63712.6
If we subtract 5940 from 6540, we get 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

Moving on to step 10:
6000 divided by 990 is 6 with a remainder of 60.
Write down 6 as next digit of the result. 
Result so far: 63712.66
The remainder is 60 after subtracting 5940 from 6000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

The final outcome is 63712.66, with a leftover of 0.06.