We're dividing 71173259 by 578 
The aim is to understand the frequency of 578 in 71173259.

Moving on to step 1:
578 can be fit into 7 0 times, resulting in a remainder of 7.
The number 0 becomes the next digit in our result. 
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 / 578

Step 2:
578 can be fit into 71 0 times, resulting in a remainder of 71.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 71 leaves us with 71.
Grab the next digit (1) from the dividend, add it to 71, then carry on: 711 / 578

Going ahead to step 3:
578 goes into 711 1 times with a remainder of 133.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 578 from 711 to get 133.
Take the next digit (7) from the dividend and append it to 133, then repeat: 1337 / 578

Going ahead to step 4:
When dividing 1337 by 578, we get 2 with a remainder of 181.
The number 2 becomes the next digit in our result. 
Result so far: 12.0
The remainder is 181 after subtracting 1156 from 1337.
Include the next digit (3) from the dividend after 181, then repeat: 1813 / 578

Step 5:
578 goes into 1813 3 times with a remainder of 79.
Put 3 as the next digit of the answer. 
Result so far: 123.0
Deduct 1734 from 1813 and we're left with 79.
Include the next digit (2) from the dividend after 79, then repeat: 792 / 578

Let's proceed to step 6:
When dividing 792 by 578, we get 1 with a remainder of 214.
Put 1 as the next digit of the answer. 
Result so far: 1231.0
Subtract 578 from 792 to get 214.
Fetch the next digit (5) from the dividend, attach it to 214 and continue: 2145 / 578

Let's proceed to step 7:
578 can be fit into 2145 3 times, resulting in a remainder of 411.
Put 3 as the next digit of the answer. 
Result so far: 12313.0
If we take 1734 away from 2145, we end up with 411.
Grab the next digit (9) from the dividend, add it to 411, then carry on: 4119 / 578

Moving on to step 8:
If we divide 4119 by 578, we get 7 and a remainder of 73.
Record the quotient 7 as the next digit in the result. 
Result so far: 123137.0
Deduct 4046 from 4119 and we're left with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Going ahead to step 9:
578 goes into 730 1 times with a remainder of 152.
Record the quotient 1 as the next digit in the result. 
Result so far: 123137.1
Deduct 578 from 730 and we're left with 152.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

Moving on to step 10:
578 goes into 1520 2 times with a remainder of 364.
Put 2 as the next digit of the answer. 
Result so far: 123137.12
Subtract 1156 from 1520 to get 364.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3640, and continue the process.

On to step 11:
3640 divided by 578 is 6 with a remainder of 172.
Put 6 as the next digit of the answer. 
Result so far: 123137.126
Subtracting 3468 from 3640 leaves us with 172.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1720, and continue the process.

Step 12:
1720 divided by 578 is 2 with a remainder of 564.
The next digit of our result is 2. 
Result so far: 123137.1262
Subtracting 1156 from 1720 leaves us with 564.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5640, and continue the process.

Moving on to step 13:
If we divide 5640 by 578, we get 9 and a remainder of 438.
Write down 9 as next digit of the result. 
Result so far: 123137.12629
Subtract 5202 from 5640 to get 438.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4380, and continue the process.

Moving on to step 14:
When dividing 4380 by 578, we get 7 with a remainder of 334.
Put 7 as the next digit of the answer. 
Result so far: 123137.126297
If we subtract 4046 from 4380, we get 334.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3340, and continue the process.

On to step 15:
578 goes into 3340 5 times with a remainder of 450.
The number 5 becomes the next digit in our result. 
Result so far: 123137.1262975
The remainder is 450 after subtracting 2890 from 3340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

Step 16:
If we divide 4500 by 578, we get 7 and a remainder of 454.
The number 7 becomes the next digit in our result. 
Result so far: 123137.12629757
Deduct 4046 from 4500 and we're left with 454.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4540, and continue the process.

The final result is 123137.12629757 with a remainder of 4.54e-07.