We divide 39091109 by 663
The aim is to understand the frequency of 663 in 39091109.

Moving on to step 1:
If we divide 3 by 663, we get 0 and a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 663

Advancing to step 2:
663 goes into 39 0 times with a remainder of 39.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 39 after subtracting 0 from 39.
Fetch the next digit (0) from the dividend, attach it to 39 and continue: 390 / 663

Advancing to step 3:
663 goes into 390 0 times with a remainder of 390.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 390 to get 390.
Grab the next digit (9) from the dividend, add it to 390, then carry on: 3909 / 663

Going ahead to step 4:
If we divide 3909 by 663, we get 5 and a remainder of 594.
Use 5 as the next digit of our solution. 
Result so far: 5.0
The remainder is 594 after subtracting 3315 from 3909.
Take the next digit (1) from the dividend and append it to 594, then repeat: 5941 / 663

Going ahead to step 5:
5941 divided by 663 is 8 with a remainder of 637.
Put 8 as the next digit of the answer. 
Result so far: 58.0
Deduct 5304 from 5941 and we're left with 637.
Grab the next digit (1) from the dividend, add it to 637, then carry on: 6371 / 663

Advancing to step 6:
If we divide 6371 by 663, we get 9 and a remainder of 404.
The number 9 becomes the next digit in our result. 
Result so far: 589.0
If we subtract 5967 from 6371, we get 404.
Take the next digit (0) from the dividend and append it to 404, then repeat: 4040 / 663

Step 7:
663 can be fit into 4040 6 times, resulting in a remainder of 62.
Use 6 as the next digit of our solution. 
Result so far: 5896.0
The remainder is 62 after subtracting 3978 from 4040.
Take the next digit (9) from the dividend and append it to 62, then repeat: 629 / 663

On to step 8:
663 can be fit into 629 0 times, resulting in a remainder of 629.
Put 0 as the next digit of the answer. 
Result so far: 58960.0
Subtract 0 from 629 to get 629.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6290, and continue the process.

Let's proceed to step 9:
If we divide 6290 by 663, we get 9 and a remainder of 323.
The next digit of our result is 9. 
Result so far: 58960.9
If we subtract 5967 from 6290, we get 323.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3230, and continue the process.

Step 10:
3230 divided by 663 is 4 with a remainder of 578.
Record the quotient 4 as the next digit in the result. 
Result so far: 58960.94
If we subtract 2652 from 3230, we get 578.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5780, and continue the process.

Step 11:
663 can be fit into 5780 8 times, resulting in a remainder of 476.
The next digit of our result is 8. 
Result so far: 58960.948
If we subtract 5304 from 5780, we get 476.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4760, and continue the process.

On to step 12:
4760 divided by 663 is 7 with a remainder of 119.
Write down 7 as next digit of the result. 
Result so far: 58960.9487
Subtracting 4641 from 4760 leaves us with 119.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1190, and continue the process.

Moving on to step 13:
When dividing 1190 by 663, we get 1 with a remainder of 527.
Write down 1 as next digit of the result. 
Result so far: 58960.94871
Deduct 663 from 1190 and we're left with 527.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5270, and continue the process.

Moving on to step 14:
If we divide 5270 by 663, we get 7 and a remainder of 629.
Record the quotient 7 as the next digit in the result. 
Result so far: 58960.948717
Subtract 4641 from 5270 to get 629.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6290, and continue the process.

On to step 15:
The number 663 fits into 6290 9 times, leaving a remainder of 323.
The number 9 becomes the next digit in our result. 
Result so far: 58960.9487179
The remainder is 323 after subtracting 5967 from 6290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3230, and continue the process.

Step 16:
663 can be fit into 3230 4 times, resulting in a remainder of 578.
The next digit of our result is 4. 
Result so far: 58960.94871794
If we take 2652 away from 3230, we end up with 578.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5780, and continue the process.

The final result is 58960.94871794 with a remainder of 5.78e-07.