30386940 divided by 604 
The aim is to understand the frequency of 604 in 30386940.

Advancing to step 1:
604 can be fit into 3 0 times, resulting in a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 604

On to step 2:
The number 604 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
If we subtract 0 from 30, we get 30.
Include the next digit (3) from the dividend after 30, then repeat: 303 / 604

Let's proceed to step 3:
When dividing 303 by 604, we get 0 with a remainder of 303.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 303, we end up with 303.
Bring next digit (8) of the dividend behind the 303 and repeat the process: 3038 / 604

Going ahead to step 4:
When dividing 3038 by 604, we get 5 with a remainder of 18.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
If we subtract 3020 from 3038, we get 18.
Take the next digit (6) from the dividend and append it to 18, then repeat: 186 / 604

On to step 5:
186 divided by 604 is 0 with a remainder of 186.
Use 0 as the next digit of our solution. 
Result so far: 50.0
Subtract 0 from 186 to get 186.
Take the next digit (9) from the dividend and append it to 186, then repeat: 1869 / 604

Let's proceed to step 6:
604 can be fit into 1869 3 times, resulting in a remainder of 57.
Use 3 as the next digit of our solution. 
Result so far: 503.0
Subtracting 1812 from 1869 leaves us with 57.
Fetch the next digit (4) from the dividend, attach it to 57 and continue: 574 / 604

Step 7:
When dividing 574 by 604, we get 0 with a remainder of 574.
Put 0 as the next digit of the answer. 
Result so far: 5030.0
Deduct 0 from 574 and we're left with 574.
Grab the next digit (0) from the dividend, add it to 574, then carry on: 5740 / 604

Advancing to step 8:
604 goes into 5740 9 times with a remainder of 304.
Use 9 as the next digit of our solution. 
Result so far: 50309.0
The remainder is 304 after subtracting 5436 from 5740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3040, and continue the process.

On to step 9:
604 goes into 3040 5 times with a remainder of 20.
The number 5 becomes the next digit in our result. 
Result so far: 50309.5
Subtracting 3020 from 3040 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 10:
The number 604 fits into 200 0 times, leaving a remainder of 200.
Write down 0 as next digit of the result. 
Result so far: 50309.5
Deduct 0 from 200 and we're left 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.

Moving on to step 11:
If we divide 2000 by 604, we get 3 and a remainder of 188.
The number 3 becomes the next digit in our result. 
Result so far: 50309.503
If we subtract 1812 from 2000, we get 188.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1880, and continue the process.

Step 12:
The number 604 fits into 1880 3 times, leaving a remainder of 68.
Put 3 as the next digit of the answer. 
Result so far: 50309.5033
If we take 1812 away from 1880, we end up with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

The quotient of the division is 50309.5033, and the remainder is 0.00068.