We look at the division of 15663037 by 799 
The aim is to understand the frequency of 799 in 15663037.

On to step 1:
1 divided by 799 is 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 799

Going ahead to step 2:
799 can be fit into 15 0 times, resulting in a remainder of 15.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 15 to get 15.
Include the next digit (6) from the dividend after 15, then repeat: 156 / 799

Going ahead to step 3:
The number 799 fits into 156 0 times, leaving a remainder of 156.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 156 after subtracting 0 from 156.
Grab the next digit (6) from the dividend, add it to 156, then carry on: 1566 / 799

Going ahead to step 4:
When dividing 1566 by 799, we get 1 with a remainder of 767.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 799 from 1566 leaves us with 767.
Fetch the next digit (3) from the dividend, attach it to 767 and continue: 7673 / 799

Let's proceed to step 5:
799 can be fit into 7673 9 times, resulting in a remainder of 482.
Write down 9 as next digit of the result. 
Result so far: 19.0
Deduct 7191 from 7673 and we're left with 482.
Bring next digit (0) of the dividend behind the 482 and repeat the process: 4820 / 799

Advancing to step 6:
4820 divided by 799 is 6 with a remainder of 26.
The next digit of our result is 6. 
Result so far: 196.0
Subtracting 4794 from 4820 leaves us with 26.
Take the next digit (3) from the dividend and append it to 26, then repeat: 263 / 799

Let's proceed to step 7:
The number 799 fits into 263 0 times, leaving a remainder of 263.
The next digit of our result is 0. 
Result so far: 1960.0
The remainder is 263 after subtracting 0 from 263.
Bring next digit (7) of the dividend behind the 263 and repeat the process: 2637 / 799

Advancing to step 8:
799 can be fit into 2637 3 times, resulting in a remainder of 240.
Put 3 as the next digit of the answer. 
Result so far: 19603.0
Deduct 2397 from 2637 and we're left with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

On to step 9:
799 can be fit into 2400 3 times, resulting in a remainder of 3.
Write down 3 as next digit of the result. 
Result so far: 19603.3
If we subtract 2397 from 2400, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

On to step 10:
799 goes into 30 0 times with a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 19603.3
Subtracting 0 from 30 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 11:
300 divided by 799 is 0 with a remainder of 300.
Put 0 as the next digit of the answer. 
Result so far: 19603.3
Deduct 0 from 300 and we're left with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

In conclusion, the division gives 19603.3 with a balance of 0.03.