Let's divide 9039901 by 780
The aim is to understand the frequency of 780 in 9039901.

Moving on to step 1:
9 divided by 780 is 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Grab the next digit (0) from the dividend, add it to 9, then carry on: 90 / 780

On to step 2:
The number 780 fits into 90 0 times, leaving a remainder of 90.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 90 leaves us with 90.
Take the next digit (3) from the dividend and append it to 90, then repeat: 903 / 780

Going ahead to step 3:
If we divide 903 by 780, we get 1 and a remainder of 123.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 123 after subtracting 780 from 903.
Append the next digit (9) from the dividend to 123 and continue with: 1239 / 780

Let's proceed to step 4:
780 goes into 1239 1 times with a remainder of 459.
Write down 1 as next digit of the result. 
Result so far: 11.0
Deduct 780 from 1239 and we're left with 459.
Grab the next digit (9) from the dividend, add it to 459, then carry on: 4599 / 780

Going ahead to step 5:
780 goes into 4599 5 times with a remainder of 699.
Write down 5 as next digit of the result. 
Result so far: 115.0
Subtract 3900 from 4599 to get 699.
Take the next digit (0) from the dividend and append it to 699, then repeat: 6990 / 780

Moving on to step 6:
780 goes into 6990 8 times with a remainder of 750.
The number 8 becomes the next digit in our result. 
Result so far: 1158.0
Subtracting 6240 from 6990 leaves us with 750.
Grab the next digit (1) from the dividend, add it to 750, then carry on: 7501 / 780

Let's proceed to step 7:
780 can be fit into 7501 9 times, resulting in a remainder of 481.
Use 9 as the next digit of our solution. 
Result so far: 11589.0
Subtract 7020 from 7501 to get 481.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4810, and continue the process.

Step 8:
780 goes into 4810 6 times with a remainder of 130.
The next digit of our result is 6. 
Result so far: 11589.6
If we subtract 4680 from 4810, we get 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Going ahead to step 9:
780 can be fit into 1300 1 times, resulting in a remainder of 520.
The number 1 becomes the next digit in our result. 
Result so far: 11589.61
Subtracting 780 from 1300 leaves us with 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

Moving on to step 10:
780 goes into 5200 6 times with a remainder of 520.
The number 6 becomes the next digit in our result. 
Result so far: 11589.616
If we subtract 4680 from 5200, we get 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

Advancing to step 11:
When dividing 5200 by 780, we get 6 with a remainder of 520.
Put 6 as the next digit of the answer. 
Result so far: 11589.6166
If we subtract 4680 from 5200, we get 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

After the division, we end up with 11589.6166 and a remainder of 0.0052.