30375038 ÷ 390 
The aim is to understand the frequency of 390 in 30375038.

Step 1:
The number 390 fits into 3 0 times, leaving a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 390

On to step 2:
The number 390 fits into 30 0 times, leaving a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 30, we get 30.
Include the next digit (3) from the dividend after 30, then repeat: 303 / 390

Advancing to step 3:
390 can be fit into 303 0 times, resulting in a remainder of 303.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 303, we get 303.
Bring next digit (7) of the dividend behind the 303 and repeat the process: 3037 / 390

Going ahead to step 4:
390 can be fit into 3037 7 times, resulting in a remainder of 307.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
If we subtract 2730 from 3037, we get 307.
Grab the next digit (5) from the dividend, add it to 307, then carry on: 3075 / 390

Step 5:
When dividing 3075 by 390, we get 7 with a remainder of 345.
Record the quotient 7 as the next digit in the result. 
Result so far: 77.0
If we subtract 2730 from 3075, we get 345.
Fetch the next digit (0) from the dividend, attach it to 345 and continue: 3450 / 390

Let's proceed to step 6:
390 can be fit into 3450 8 times, resulting in a remainder of 330.
Write down 8 as next digit of the result. 
Result so far: 778.0
The remainder is 330 after subtracting 3120 from 3450.
Grab the next digit (3) from the dividend, add it to 330, then carry on: 3303 / 390

Step 7:
390 can be fit into 3303 8 times, resulting in a remainder of 183.
Write down 8 as next digit of the result. 
Result so far: 7788.0
If we subtract 3120 from 3303, we get 183.
Fetch the next digit (8) from the dividend, attach it to 183 and continue: 1838 / 390

On to step 8:
390 can be fit into 1838 4 times, resulting in a remainder of 278.
The next digit of our result is 4. 
Result so far: 77884.0
The remainder is 278 after subtracting 1560 from 1838.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2780, and continue the process.

Moving on to step 9:
When dividing 2780 by 390, we get 7 with a remainder of 50.
Put 7 as the next digit of the answer. 
Result so far: 77884.7
If we take 2730 away from 2780, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 10:
500 divided by 390 is 1 with a remainder of 110.
The next digit of our result is 1. 
Result so far: 77884.71
Subtract 390 from 500 to get 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

On to step 11:
1100 divided by 390 is 2 with a remainder of 320.
Write down 2 as next digit of the result. 
Result so far: 77884.712
If we take 780 away from 1100, we end up with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Step 12:
The number 390 fits into 3200 8 times, leaving a remainder of 80.
The number 8 becomes the next digit in our result. 
Result so far: 77884.7128
Subtract 3120 from 3200 to get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Step 13:
If we divide 800 by 390, we get 2 and a remainder of 20.
Write down 2 as next digit of the result. 
Result so far: 77884.71282
If we subtract 780 from 800, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 14:
If we divide 200 by 390, we get 0 and a remainder of 200.
The number 0 becomes the next digit in our result. 
Result so far: 77884.71282
Subtracting 0 from 200 leaves us with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Going ahead to step 15:
If we divide 2000 by 390, we get 5 and a remainder of 50.
Use 5 as the next digit of our solution. 
Result so far: 77884.7128205
Subtract 1950 from 2000 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 16:
The number 390 fits into 500 1 times, leaving a remainder of 110.
Use 1 as the next digit of our solution. 
Result so far: 77884.71282051
Subtract 390 from 500 to get 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Our division results in 77884.71282051 with a remaining 1.1e-07.