We're dividing 42119775 by 578 
The aim is to understand the frequency of 578 in 42119775.

Step 1:
If we divide 4 by 578, we get 0 and a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Fetch the next digit (2) from the dividend, attach it to 4 and continue: 42 / 578

Step 2:
42 divided by 578 is 0 with a remainder of 42.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 42, we end up with 42.
Grab the next digit (1) from the dividend, add it to 42, then carry on: 421 / 578

Advancing to step 3:
If we divide 421 by 578, we get 0 and a remainder of 421.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 421, we get 421.
Append the next digit (1) from the dividend to 421 and continue with: 4211 / 578

Moving on to step 4:
578 can be fit into 4211 7 times, resulting in a remainder of 165.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
The remainder is 165 after subtracting 4046 from 4211.
Fetch the next digit (9) from the dividend, attach it to 165 and continue: 1659 / 578

On to step 5:
If we divide 1659 by 578, we get 2 and a remainder of 503.
Use 2 as the next digit of our solution. 
Result so far: 72.0
The remainder is 503 after subtracting 1156 from 1659.
Bring next digit (7) of the dividend behind the 503 and repeat the process: 5037 / 578

Moving on to step 6:
The number 578 fits into 5037 8 times, leaving a remainder of 413.
The next digit of our result is 8. 
Result so far: 728.0
The remainder is 413 after subtracting 4624 from 5037.
Grab the next digit (7) from the dividend, add it to 413, then carry on: 4137 / 578

Let's proceed to step 7:
578 goes into 4137 7 times with a remainder of 91.
Write down 7 as next digit of the result. 
Result so far: 7287.0
If we subtract 4046 from 4137, we get 91.
Bring next digit (5) of the dividend behind the 91 and repeat the process: 915 / 578

Advancing to step 8:
When dividing 915 by 578, we get 1 with a remainder of 337.
Write down 1 as next digit of the result. 
Result so far: 72871.0
If we take 578 away from 915, we end up with 337.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3370, and continue the process.

Let's proceed to step 9:
The number 578 fits into 3370 5 times, leaving a remainder of 480.
Record the quotient 5 as the next digit in the result. 
Result so far: 72871.5
Deduct 2890 from 3370 and we're left with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Let's proceed to step 10:
When dividing 4800 by 578, we get 8 with a remainder of 176.
The next digit of our result is 8. 
Result so far: 72871.58
If we subtract 4624 from 4800, we get 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Going ahead to step 11:
If we divide 1760 by 578, we get 3 and a remainder of 26.
The number 3 becomes the next digit in our result. 
Result so far: 72871.583
The remainder is 26 after subtracting 1734 from 1760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Let's proceed to step 12:
578 goes into 260 0 times with a remainder of 260.
The number 0 becomes the next digit in our result. 
Result so far: 72871.583
If we subtract 0 from 260, we get 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

On to step 13:
2600 divided by 578 is 4 with a remainder of 288.
Put 4 as the next digit of the answer. 
Result so far: 72871.58304
Subtract 2312 from 2600 to get 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Going ahead to step 14:
When dividing 2880 by 578, we get 4 with a remainder of 568.
Record the quotient 4 as the next digit in the result. 
Result so far: 72871.583044
Deduct 2312 from 2880 and we're left with 568.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5680, and continue the process.

The final result is 72871.583044 with a remainder of 5.68e-05.