Let's divide 72857787 by 663
The aim is to understand the frequency of 663 in 72857787.

Moving on to step 1:
7 divided by 663 is 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Take the next digit (2) from the dividend and append it to 7, then repeat: 72 / 663

Moving on to step 2:
When dividing 72 by 663, we get 0 with a remainder of 72.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 72, we end up with 72.
Take the next digit (8) from the dividend and append it to 72, then repeat: 728 / 663

Moving on to step 3:
663 goes into 728 1 times with a remainder of 65.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 663 from 728 and we're left with 65.
Grab the next digit (5) from the dividend, add it to 65, then carry on: 655 / 663

Advancing to step 4:
When dividing 655 by 663, we get 0 with a remainder of 655.
The next digit of our result is 0. 
Result so far: 10.0
If we take 0 away from 655, we end up with 655.
Bring next digit (7) of the dividend behind the 655 and repeat the process: 6557 / 663

Step 5:
If we divide 6557 by 663, we get 9 and a remainder of 590.
The number 9 becomes the next digit in our result. 
Result so far: 109.0
The remainder is 590 after subtracting 5967 from 6557.
Grab the next digit (7) from the dividend, add it to 590, then carry on: 5907 / 663

Going ahead to step 6:
663 can be fit into 5907 8 times, resulting in a remainder of 603.
Put 8 as the next digit of the answer. 
Result so far: 1098.0
Subtracting 5304 from 5907 leaves us with 603.
Bring next digit (8) of the dividend behind the 603 and repeat the process: 6038 / 663

Moving on to step 7:
6038 divided by 663 is 9 with a remainder of 71.
Write down 9 as next digit of the result. 
Result so far: 10989.0
If we take 5967 away from 6038, we end up with 71.
Append the next digit (7) from the dividend to 71 and continue with: 717 / 663

Advancing to step 8:
717 divided by 663 is 1 with a remainder of 54.
The next digit of our result is 1. 
Result so far: 109891.0
Deduct 663 from 717 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Step 9:
The number 663 fits into 540 0 times, leaving a remainder of 540.
Record the quotient 0 as the next digit in the result. 
Result so far: 109891.0
Subtract 0 from 540 to get 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

Let's proceed to step 10:
5400 divided by 663 is 8 with a remainder of 96.
The next digit of our result is 8. 
Result so far: 109891.08
The remainder is 96 after subtracting 5304 from 5400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Moving on to step 11:
663 goes into 960 1 times with a remainder of 297.
Record the quotient 1 as the next digit in the result. 
Result so far: 109891.081
If we take 663 away from 960, we end up with 297.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2970, and continue the process.

Step 12:
The number 663 fits into 2970 4 times, leaving a remainder of 318.
Write down 4 as next digit of the result. 
Result so far: 109891.0814
Subtracting 2652 from 2970 leaves us with 318.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3180, and continue the process.

Step 13:
663 goes into 3180 4 times with a remainder of 528.
The number 4 becomes the next digit in our result. 
Result so far: 109891.08144
Subtracting 2652 from 3180 leaves us with 528.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5280, and continue the process.

After the division, we end up with 109891.08144 and a remainder of 0.000528.