28249953 ÷ 663 
The aim is to understand the frequency of 663 in 28249953.

Moving on to step 1:
2 divided by 663 is 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Take the next digit (8) from the dividend and append it to 2, then repeat: 28 / 663

Step 2:
If we divide 28 by 663, we get 0 and a remainder of 28.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 28, we end up with 28.
Append the next digit (2) from the dividend to 28 and continue with: 282 / 663

Going ahead to step 3:
663 can be fit into 282 0 times, resulting in a remainder of 282.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 282 leaves us with 282.
Bring next digit (4) of the dividend behind the 282 and repeat the process: 2824 / 663

Going ahead to step 4:
If we divide 2824 by 663, we get 4 and a remainder of 172.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Deduct 2652 from 2824 and we're left with 172.
Append the next digit (9) from the dividend to 172 and continue with: 1729 / 663

Moving on to step 5:
663 goes into 1729 2 times with a remainder of 403.
Write down 2 as next digit of the result. 
Result so far: 42.0
Subtracting 1326 from 1729 leaves us with 403.
Take the next digit (9) from the dividend and append it to 403, then repeat: 4039 / 663

Let's proceed to step 6:
The number 663 fits into 4039 6 times, leaving a remainder of 61.
Use 6 as the next digit of our solution. 
Result so far: 426.0
The remainder is 61 after subtracting 3978 from 4039.
Take the next digit (5) from the dividend and append it to 61, then repeat: 615 / 663

Going ahead to step 7:
663 can be fit into 615 0 times, resulting in a remainder of 615.
Record the quotient 0 as the next digit in the result. 
Result so far: 4260.0
Subtracting 0 from 615 leaves us with 615.
Include the next digit (3) from the dividend after 615, then repeat: 6153 / 663

Advancing to step 8:
6153 divided by 663 is 9 with a remainder of 186.
The number 9 becomes the next digit in our result. 
Result so far: 42609.0
Subtracting 5967 from 6153 leaves us with 186.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1860, and continue the process.

On to step 9:
663 goes into 1860 2 times with a remainder of 534.
The next digit of our result is 2. 
Result so far: 42609.2
Subtract 1326 from 1860 to get 534.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5340, and continue the process.

Advancing to step 10:
663 can be fit into 5340 8 times, resulting in a remainder of 36.
Use 8 as the next digit of our solution. 
Result so far: 42609.28
If we subtract 5304 from 5340, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 11:
663 goes into 360 0 times with a remainder of 360.
The next digit of our result is 0. 
Result so far: 42609.28
Subtracting 0 from 360 leaves us with 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Going ahead to step 12:
3600 divided by 663 is 5 with a remainder of 285.
The number 5 becomes the next digit in our result. 
Result so far: 42609.2805
If we subtract 3315 from 3600, we get 285.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2850, and continue the process.

Moving on to step 13:
The number 663 fits into 2850 4 times, leaving a remainder of 198.
Write down 4 as next digit of the result. 
Result so far: 42609.28054
Deduct 2652 from 2850 and we're left with 198.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1980, and continue the process.

Advancing to step 14:
1980 divided by 663 is 2 with a remainder of 654.
Put 2 as the next digit of the answer. 
Result so far: 42609.280542
If we subtract 1326 from 1980, we get 654.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6540, and continue the process.

Step 15:
The number 663 fits into 6540 9 times, leaving a remainder of 573.
Use 9 as the next digit of our solution. 
Result so far: 42609.2805429
Subtracting 5967 from 6540 leaves us with 573.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5730, and continue the process.

Advancing to step 16:
When dividing 5730 by 663, we get 8 with a remainder of 426.
Record the quotient 8 as the next digit in the result. 
Result so far: 42609.28054298
Deduct 5304 from 5730 and we're left with 426.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4260, and continue the process.

The final outcome is 42609.28054298, with a leftover of 4.26e-07.