We look at the division of 30899199 by 780 
The aim is to understand the frequency of 780 in 30899199.

On to step 1:
780 can be fit into 3 0 times, resulting in a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Append the next digit (0) from the dividend to 3 and continue with: 30 / 780

On to step 2:
When dividing 30 by 780, we get 0 with a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 30, we end up with 30.
Include the next digit (8) from the dividend after 30, then repeat: 308 / 780

Moving on to step 3:
If we divide 308 by 780, we get 0 and a remainder of 308.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 308 to get 308.
Fetch the next digit (9) from the dividend, attach it to 308 and continue: 3089 / 780

Moving on to step 4:
780 can be fit into 3089 3 times, resulting in a remainder of 749.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
The remainder is 749 after subtracting 2340 from 3089.
Grab the next digit (9) from the dividend, add it to 749, then carry on: 7499 / 780

On to step 5:
7499 divided by 780 is 9 with a remainder of 479.
The number 9 becomes the next digit in our result. 
Result so far: 39.0
The remainder is 479 after subtracting 7020 from 7499.
Fetch the next digit (1) from the dividend, attach it to 479 and continue: 4791 / 780

Advancing to step 6:
When dividing 4791 by 780, we get 6 with a remainder of 111.
The number 6 becomes the next digit in our result. 
Result so far: 396.0
If we subtract 4680 from 4791, we get 111.
Grab the next digit (9) from the dividend, add it to 111, then carry on: 1119 / 780

Going ahead to step 7:
780 goes into 1119 1 times with a remainder of 339.
Record the quotient 1 as the next digit in the result. 
Result so far: 3961.0
Subtract 780 from 1119 to get 339.
Fetch the next digit (9) from the dividend, attach it to 339 and continue: 3399 / 780

Step 8:
The number 780 fits into 3399 4 times, leaving a remainder of 279.
The number 4 becomes the next digit in our result. 
Result so far: 39614.0
Deduct 3120 from 3399 and we're left with 279.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2790, and continue the process.

Let's proceed to step 9:
If we divide 2790 by 780, we get 3 and a remainder of 450.
The number 3 becomes the next digit in our result. 
Result so far: 39614.3
If we take 2340 away from 2790, we end up with 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

Advancing to step 10:
The number 780 fits into 4500 5 times, leaving a remainder of 600.
Use 5 as the next digit of our solution. 
Result so far: 39614.35
Deduct 3900 from 4500 and we're left with 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

Going ahead to step 11:
780 goes into 6000 7 times with a remainder of 540.
Put 7 as the next digit of the answer. 
Result so far: 39614.357
Subtracting 5460 from 6000 leaves us with 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

Moving on to step 12:
The number 780 fits into 5400 6 times, leaving a remainder of 720.
The next digit of our result is 6. 
Result so far: 39614.3576
Deduct 4680 from 5400 and we're left with 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7200, and continue the process.

Advancing to step 13:
The number 780 fits into 7200 9 times, leaving a remainder of 180.
Record the quotient 9 as the next digit in the result. 
Result so far: 39614.35769
The remainder is 180 after subtracting 7020 from 7200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Step 14:
780 goes into 1800 2 times with a remainder of 240.
Put 2 as the next digit of the answer. 
Result so far: 39614.357692
Deduct 1560 from 1800 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.

Advancing to step 15:
When dividing 2400 by 780, we get 3 with a remainder of 60.
The number 3 becomes the next digit in our result. 
Result so far: 39614.3576923
If we subtract 2340 from 2400, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 16:
If we divide 600 by 780, we get 0 and a remainder of 600.
Write down 0 as next digit of the result. 
Result so far: 39614.3576923
If we subtract 0 from 600, we get 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

In conclusion, the division gives 39614.3576923 with a balance of 6e-07.