We're dividing 77346250 by 574 
The aim is to understand the frequency of 574 in 77346250.

On to step 1:
When dividing 7 by 574, we get 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Take the next digit (7) from the dividend and append it to 7, then repeat: 77 / 574

Step 2:
77 divided by 574 is 0 with a remainder of 77.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 77, we end up with 77.
Include the next digit (3) from the dividend after 77, then repeat: 773 / 574

Going ahead to step 3:
The number 574 fits into 773 1 times, leaving a remainder of 199.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 574 away from 773, we end up with 199.
Append the next digit (4) from the dividend to 199 and continue with: 1994 / 574

On to step 4:
If we divide 1994 by 574, we get 3 and a remainder of 272.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
The remainder is 272 after subtracting 1722 from 1994.
Grab the next digit (6) from the dividend, add it to 272, then carry on: 2726 / 574

Step 5:
The number 574 fits into 2726 4 times, leaving a remainder of 430.
Record the quotient 4 as the next digit in the result. 
Result so far: 134.0
Subtract 2296 from 2726 to get 430.
Append the next digit (2) from the dividend to 430 and continue with: 4302 / 574

Let's proceed to step 6:
If we divide 4302 by 574, we get 7 and a remainder of 284.
The number 7 becomes the next digit in our result. 
Result so far: 1347.0
If we subtract 4018 from 4302, we get 284.
Grab the next digit (5) from the dividend, add it to 284, then carry on: 2845 / 574

Going ahead to step 7:
The number 574 fits into 2845 4 times, leaving a remainder of 549.
Record the quotient 4 as the next digit in the result. 
Result so far: 13474.0
Deduct 2296 from 2845 and we're left with 549.
Append the next digit (0) from the dividend to 549 and continue with: 5490 / 574

Moving on to step 8:
574 goes into 5490 9 times with a remainder of 324.
Use 9 as the next digit of our solution. 
Result so far: 134749.0
If we subtract 5166 from 5490, we get 324.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3240, and continue the process.

Going ahead to step 9:
3240 divided by 574 is 5 with a remainder of 370.
The next digit of our result is 5. 
Result so far: 134749.5
Subtract 2870 from 3240 to get 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3700, and continue the process.

Moving on to step 10:
If we divide 3700 by 574, we get 6 and a remainder of 256.
Use 6 as the next digit of our solution. 
Result so far: 134749.56
Subtracting 3444 from 3700 leaves us with 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

Step 11:
The number 574 fits into 2560 4 times, leaving a remainder of 264.
Put 4 as the next digit of the answer. 
Result so far: 134749.564
Subtracting 2296 from 2560 leaves us with 264.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2640, and continue the process.

Moving on to step 12:
When dividing 2640 by 574, we get 4 with a remainder of 344.
Use 4 as the next digit of our solution. 
Result so far: 134749.5644
Deduct 2296 from 2640 and we're left with 344.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

The final result is 134749.5644 with a remainder of 0.00344.