71129994 ÷ 574 
The aim is to understand the frequency of 574 in 71129994.

Let's proceed to step 1:
574 goes into 7 0 times with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Include the next digit (1) from the dividend after 7, then repeat: 71 / 574

Let's proceed to step 2:
71 divided by 574 is 0 with a remainder of 71.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 71 and we're left with 71.
Append the next digit (1) from the dividend to 71 and continue with: 711 / 574

Step 3:
If we divide 711 by 574, we get 1 and a remainder of 137.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 137 after subtracting 574 from 711.
Include the next digit (2) from the dividend after 137, then repeat: 1372 / 574

Advancing to step 4:
When dividing 1372 by 574, we get 2 with a remainder of 224.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
If we take 1148 away from 1372, we end up with 224.
Grab the next digit (9) from the dividend, add it to 224, then carry on: 2249 / 574

Advancing to step 5:
2249 divided by 574 is 3 with a remainder of 527.
The next digit of our result is 3. 
Result so far: 123.0
Subtracting 1722 from 2249 leaves us with 527.
Bring next digit (9) of the dividend behind the 527 and repeat the process: 5279 / 574

On to step 6:
When dividing 5279 by 574, we get 9 with a remainder of 113.
The number 9 becomes the next digit in our result. 
Result so far: 1239.0
Subtract 5166 from 5279 to get 113.
Fetch the next digit (9) from the dividend, attach it to 113 and continue: 1139 / 574

Step 7:
The number 574 fits into 1139 1 times, leaving a remainder of 565.
Use 1 as the next digit of our solution. 
Result so far: 12391.0
If we subtract 574 from 1139, we get 565.
Append the next digit (4) from the dividend to 565 and continue with: 5654 / 574

Advancing to step 8:
574 goes into 5654 9 times with a remainder of 488.
Write down 9 as next digit of the result. 
Result so far: 123919.0
If we subtract 5166 from 5654, we get 488.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4880, and continue the process.

Step 9:
When dividing 4880 by 574, we get 8 with a remainder of 288.
Write down 8 as next digit of the result. 
Result so far: 123919.8
The remainder is 288 after subtracting 4592 from 4880.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Moving on to step 10:
When dividing 2880 by 574, we get 5 with a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 123919.85
Subtracting 2870 from 2880 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 11:
When dividing 100 by 574, we get 0 with a remainder of 100.
Record the quotient 0 as the next digit in the result. 
Result so far: 123919.85
If we subtract 0 from 100, we get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Moving on to step 12:
If we divide 1000 by 574, we get 1 and a remainder of 426.
Use 1 as the next digit of our solution. 
Result so far: 123919.8501
Deduct 574 from 1000 and we're left with 426.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4260, and continue the process.

Let's proceed to step 13:
The number 574 fits into 4260 7 times, leaving a remainder of 242.
Record the quotient 7 as the next digit in the result. 
Result so far: 123919.85017
If we take 4018 away from 4260, we end up with 242.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2420, and continue the process.

Going ahead to step 14:
When dividing 2420 by 574, we get 4 with a remainder of 124.
Write down 4 as next digit of the result. 
Result so far: 123919.850174
Subtracting 2296 from 2420 leaves us with 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

On to step 15:
If we divide 1240 by 574, we get 2 and a remainder of 92.
Put 2 as the next digit of the answer. 
Result so far: 123919.8501742
The remainder is 92 after subtracting 1148 from 1240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Moving on to step 16:
The number 574 fits into 920 1 times, leaving a remainder of 346.
Record the quotient 1 as the next digit in the result. 
Result so far: 123919.85017421
Subtracting 574 from 920 leaves us with 346.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3460, and continue the process.

The final result is 123919.85017421 with a remainder of 3.46e-07.