Let's divide 39876449 by 574
The aim is to understand the frequency of 574 in 39876449.

Going ahead to step 1:
The number 574 fits into 3 0 times, leaving a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 574

Let's proceed to step 2:
When dividing 39 by 574, we get 0 with a remainder of 39.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 39 after subtracting 0 from 39.
Include the next digit (8) from the dividend after 39, then repeat: 398 / 574

Step 3:
If we divide 398 by 574, we get 0 and a remainder of 398.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 398 and we're left with 398.
Take the next digit (7) from the dividend and append it to 398, then repeat: 3987 / 574

On to step 4:
If we divide 3987 by 574, we get 6 and a remainder of 543.
Write down 6 as next digit of the result. 
Result so far: 6.0
Subtracting 3444 from 3987 leaves us with 543.
Bring next digit (6) of the dividend behind the 543 and repeat the process: 5436 / 574

Let's proceed to step 5:
If we divide 5436 by 574, we get 9 and a remainder of 270.
Record the quotient 9 as the next digit in the result. 
Result so far: 69.0
If we take 5166 away from 5436, we end up with 270.
Bring next digit (4) of the dividend behind the 270 and repeat the process: 2704 / 574

Step 6:
2704 divided by 574 is 4 with a remainder of 408.
Use 4 as the next digit of our solution. 
Result so far: 694.0
Subtracting 2296 from 2704 leaves us with 408.
Fetch the next digit (4) from the dividend, attach it to 408 and continue: 4084 / 574

Step 7:
574 can be fit into 4084 7 times, resulting in a remainder of 66.
The next digit of our result is 7. 
Result so far: 6947.0
If we subtract 4018 from 4084, we get 66.
Grab the next digit (9) from the dividend, add it to 66, then carry on: 669 / 574

On to step 8:
669 divided by 574 is 1 with a remainder of 95.
Put 1 as the next digit of the answer. 
Result so far: 69471.0
Subtract 574 from 669 to get 95.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

Going ahead to step 9:
950 divided by 574 is 1 with a remainder of 376.
The number 1 becomes the next digit in our result. 
Result so far: 69471.1
If we subtract 574 from 950, we get 376.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3760, and continue the process.

Step 10:
The number 574 fits into 3760 6 times, leaving a remainder of 316.
Put 6 as the next digit of the answer. 
Result so far: 69471.16
Deduct 3444 from 3760 and we're left with 316.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

Step 11:
574 goes into 3160 5 times with a remainder of 290.
Use 5 as the next digit of our solution. 
Result so far: 69471.165
If we take 2870 away from 3160, we end up with 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Going ahead to step 12:
The number 574 fits into 2900 5 times, leaving a remainder of 30.
The next digit of our result is 5. 
Result so far: 69471.1655
Deduct 2870 from 2900 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

The quotient of the division is 69471.1655, and the remainder is 0.0003.