30405548 ÷ 389 
The aim is to understand the frequency of 389 in 30405548.

Going ahead to step 1:
3 divided by 389 is 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 389

Moving on to step 2:
The number 389 fits into 30 0 times, leaving a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 30 to get 30.
Grab the next digit (4) from the dividend, add it to 30, then carry on: 304 / 389

Going ahead to step 3:
When dividing 304 by 389, we get 0 with a remainder of 304.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 304, we get 304.
Include the next digit (0) from the dividend after 304, then repeat: 3040 / 389

Let's proceed to step 4:
3040 divided by 389 is 7 with a remainder of 317.
Use 7 as the next digit of our solution. 
Result so far: 7.0
Subtract 2723 from 3040 to get 317.
Fetch the next digit (5) from the dividend, attach it to 317 and continue: 3175 / 389

Going ahead to step 5:
If we divide 3175 by 389, we get 8 and a remainder of 63.
The number 8 becomes the next digit in our result. 
Result so far: 78.0
Subtracting 3112 from 3175 leaves us with 63.
Include the next digit (5) from the dividend after 63, then repeat: 635 / 389

Step 6:
If we divide 635 by 389, we get 1 and a remainder of 246.
The next digit of our result is 1. 
Result so far: 781.0
Subtract 389 from 635 to get 246.
Grab the next digit (4) from the dividend, add it to 246, then carry on: 2464 / 389

Advancing to step 7:
2464 divided by 389 is 6 with a remainder of 130.
The number 6 becomes the next digit in our result. 
Result so far: 7816.0
Subtracting 2334 from 2464 leaves us with 130.
Include the next digit (8) from the dividend after 130, then repeat: 1308 / 389

Let's proceed to step 8:
If we divide 1308 by 389, we get 3 and a remainder of 141.
The number 3 becomes the next digit in our result. 
Result so far: 78163.0
The remainder is 141 after subtracting 1167 from 1308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1410, and continue the process.

Going ahead to step 9:
The number 389 fits into 1410 3 times, leaving a remainder of 243.
Put 3 as the next digit of the answer. 
Result so far: 78163.3
Subtracting 1167 from 1410 leaves us with 243.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2430, and continue the process.

Moving on to step 10:
389 goes into 2430 6 times with a remainder of 96.
Use 6 as the next digit of our solution. 
Result so far: 78163.36
The remainder is 96 after subtracting 2334 from 2430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Let's proceed to step 11:
389 goes into 960 2 times with a remainder of 182.
Put 2 as the next digit of the answer. 
Result so far: 78163.362
The remainder is 182 after subtracting 778 from 960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1820, and continue the process.

Advancing to step 12:
If we divide 1820 by 389, we get 4 and a remainder of 264.
Write down 4 as next digit of the result. 
Result so far: 78163.3624
The remainder is 264 after subtracting 1556 from 1820.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2640, and continue the process.

Advancing to step 13:
389 goes into 2640 6 times with a remainder of 306.
The number 6 becomes the next digit in our result. 
Result so far: 78163.36246
Deduct 2334 from 2640 and we're left with 306.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3060, and continue the process.

Let's proceed to step 14:
When dividing 3060 by 389, we get 7 with a remainder of 337.
The number 7 becomes the next digit in our result. 
Result so far: 78163.362467
Subtract 2723 from 3060 to get 337.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3370, and continue the process.

On to step 15:
389 can be fit into 3370 8 times, resulting in a remainder of 258.
The number 8 becomes the next digit in our result. 
Result so far: 78163.3624678
Subtract 3112 from 3370 to get 258.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2580, and continue the process.

Step 16:
2580 divided by 389 is 6 with a remainder of 246.
Write down 6 as next digit of the result. 
Result so far: 78163.36246786
If we subtract 2334 from 2580, we get 246.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2460, and continue the process.

In conclusion, the division gives 78163.36246786 with a balance of 2.46e-07.