We look at the division of 81608330 by 142 
The aim is to understand the frequency of 142 in 81608330.

Moving on to step 1:
When dividing 8 by 142, we get 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 142

Going ahead to step 2:
When dividing 81 by 142, we get 0 with a remainder of 81.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 81, we end up with 81.
Fetch the next digit (6) from the dividend, attach it to 81 and continue: 816 / 142

Step 3:
When dividing 816 by 142, we get 5 with a remainder of 106.
Put 5 as the next digit of the answer. 
Result so far: 5.0
If we subtract 710 from 816, we get 106.
Include the next digit (0) from the dividend after 106, then repeat: 1060 / 142

On to step 4:
142 goes into 1060 7 times with a remainder of 66.
Record the quotient 7 as the next digit in the result. 
Result so far: 57.0
Deduct 994 from 1060 and we're left with 66.
Fetch the next digit (8) from the dividend, attach it to 66 and continue: 668 / 142

Let's proceed to step 5:
If we divide 668 by 142, we get 4 and a remainder of 100.
Write down 4 as next digit of the result. 
Result so far: 574.0
Deduct 568 from 668 and we're left with 100.
Grab the next digit (3) from the dividend, add it to 100, then carry on: 1003 / 142

Step 6:
The number 142 fits into 1003 7 times, leaving a remainder of 9.
Use 7 as the next digit of our solution. 
Result so far: 5747.0
If we take 994 away from 1003, we end up with 9.
Fetch the next digit (3) from the dividend, attach it to 9 and continue: 93 / 142

Moving on to step 7:
142 goes into 93 0 times with a remainder of 93.
Write down 0 as next digit of the result. 
Result so far: 57470.0
Deduct 0 from 93 and we're left with 93.
Fetch the next digit (0) from the dividend, attach it to 93 and continue: 930 / 142

Step 8:
142 goes into 930 6 times with a remainder of 78.
The number 6 becomes the next digit in our result. 
Result so far: 574706.0
If we subtract 852 from 930, we get 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Advancing to step 9:
142 goes into 780 5 times with a remainder of 70.
Use 5 as the next digit of our solution. 
Result so far: 574706.5
If we subtract 710 from 780, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Advancing to step 10:
If we divide 700 by 142, we get 4 and a remainder of 132.
Record the quotient 4 as the next digit in the result. 
Result so far: 574706.54
Deduct 568 from 700 and we're left with 132.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

On to step 11:
The number 142 fits into 1320 9 times, leaving a remainder of 42.
Write down 9 as next digit of the result. 
Result so far: 574706.549
Subtract 1278 from 1320 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Step 12:
420 divided by 142 is 2 with a remainder of 136.
Record the quotient 2 as the next digit in the result. 
Result so far: 574706.5492
Deduct 284 from 420 and we're left with 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Let's proceed to step 13:
142 goes into 1360 9 times with a remainder of 82.
The next digit of our result is 9. 
Result so far: 574706.54929
Subtracting 1278 from 1360 leaves us with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Going ahead to step 14:
If we divide 820 by 142, we get 5 and a remainder of 110.
The next digit of our result is 5. 
Result so far: 574706.549295
Deduct 710 from 820 and we're left with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

On to step 15:
When dividing 1100 by 142, we get 7 with a remainder of 106.
The number 7 becomes the next digit in our result. 
Result so far: 574706.5492957
Deduct 994 from 1100 and we're left with 106.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

On to step 16:
142 goes into 1060 7 times with a remainder of 66.
The next digit of our result is 7. 
Result so far: 574706.54929577
Deduct 994 from 1060 and we're left with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

After the division, we end up with 574706.54929577 and a remainder of 6.6e-08.