We're dividing 71612284 by 143 
The aim is to understand the frequency of 143 in 71612284.

Advancing to step 1:
When dividing 7 by 143, we get 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Take the next digit (1) from the dividend and append it to 7, then repeat: 71 / 143

Step 2:
The number 143 fits into 71 0 times, leaving a remainder of 71.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 71 after subtracting 0 from 71.
Fetch the next digit (6) from the dividend, attach it to 71 and continue: 716 / 143

Moving on to step 3:
143 can be fit into 716 5 times, resulting in a remainder of 1.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Deduct 715 from 716 and we're left with 1.
Bring next digit (1) of the dividend behind the 1 and repeat the process: 11 / 143

Step 4:
If we divide 11 by 143, we get 0 and a remainder of 11.
Write down 0 as next digit of the result. 
Result so far: 50.0
If we subtract 0 from 11, we get 11.
Append the next digit (2) from the dividend to 11 and continue with: 112 / 143

On to step 5:
143 goes into 112 0 times with a remainder of 112.
Use 0 as the next digit of our solution. 
Result so far: 500.0
The remainder is 112 after subtracting 0 from 112.
Include the next digit (2) from the dividend after 112, then repeat: 1122 / 143

Moving on to step 6:
1122 divided by 143 is 7 with a remainder of 121.
Record the quotient 7 as the next digit in the result. 
Result so far: 5007.0
If we take 1001 away from 1122, we end up with 121.
Grab the next digit (8) from the dividend, add it to 121, then carry on: 1218 / 143

On to step 7:
143 goes into 1218 8 times with a remainder of 74.
The number 8 becomes the next digit in our result. 
Result so far: 50078.0
The remainder is 74 after subtracting 1144 from 1218.
Take the next digit (4) from the dividend and append it to 74, then repeat: 744 / 143

Let's proceed to step 8:
143 goes into 744 5 times with a remainder of 29.
Put 5 as the next digit of the answer. 
Result so far: 500785.0
If we subtract 715 from 744, we get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Let's proceed to step 9:
If we divide 290 by 143, we get 2 and a remainder of 4.
The number 2 becomes the next digit in our result. 
Result so far: 500785.2
Deduct 286 from 290 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 10:
If we divide 40 by 143, we get 0 and a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 500785.2
Subtract 0 from 40 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 11:
When dividing 400 by 143, we get 2 with a remainder of 114.
Write down 2 as next digit of the result. 
Result so far: 500785.202
Deduct 286 from 400 and we're left with 114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Going ahead to step 12:
143 goes into 1140 7 times with a remainder of 139.
Write down 7 as next digit of the result. 
Result so far: 500785.2027
The remainder is 139 after subtracting 1001 from 1140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1390, and continue the process.

Let's proceed to step 13:
If we divide 1390 by 143, we get 9 and a remainder of 103.
Record the quotient 9 as the next digit in the result. 
Result so far: 500785.20279
Subtract 1287 from 1390 to get 103.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1030, and continue the process.

Step 14:
1030 divided by 143 is 7 with a remainder of 29.
Record the quotient 7 as the next digit in the result. 
Result so far: 500785.202797
If we subtract 1001 from 1030, we get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Going ahead to step 15:
The number 143 fits into 290 2 times, leaving a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 500785.2027972
Subtracting 286 from 290 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 16:
The number 143 fits into 40 0 times, leaving a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 500785.2027972
Subtracting 0 from 40 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Our division results in 500785.2027972 with a remaining 4e-08.