We look at the division of 41028715 by 642 
The aim is to understand the frequency of 642 in 41028715.

On to step 1:
642 goes into 4 0 times with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Take the next digit (1) from the dividend and append it to 4, then repeat: 41 / 642

Advancing to step 2:
642 goes into 41 0 times with a remainder of 41.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 41 after subtracting 0 from 41.
Bring next digit (0) of the dividend behind the 41 and repeat the process: 410 / 642

Going ahead to step 3:
642 can be fit into 410 0 times, resulting in a remainder of 410.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 410 and we're left with 410.
Include the next digit (2) from the dividend after 410, then repeat: 4102 / 642

Moving on to step 4:
4102 divided by 642 is 6 with a remainder of 250.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
If we subtract 3852 from 4102, we get 250.
Append the next digit (8) from the dividend to 250 and continue with: 2508 / 642

Let's proceed to step 5:
If we divide 2508 by 642, we get 3 and a remainder of 582.
Put 3 as the next digit of the answer. 
Result so far: 63.0
The remainder is 582 after subtracting 1926 from 2508.
Take the next digit (7) from the dividend and append it to 582, then repeat: 5827 / 642

Moving on to step 6:
642 goes into 5827 9 times with a remainder of 49.
The number 9 becomes the next digit in our result. 
Result so far: 639.0
Deduct 5778 from 5827 and we're left with 49.
Fetch the next digit (1) from the dividend, attach it to 49 and continue: 491 / 642

Step 7:
491 divided by 642 is 0 with a remainder of 491.
Record the quotient 0 as the next digit in the result. 
Result so far: 6390.0
Subtract 0 from 491 to get 491.
Append the next digit (5) from the dividend to 491 and continue with: 4915 / 642

Let's proceed to step 8:
642 goes into 4915 7 times with a remainder of 421.
Record the quotient 7 as the next digit in the result. 
Result so far: 63907.0
If we subtract 4494 from 4915, we get 421.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4210, and continue the process.

Advancing to step 9:
4210 divided by 642 is 6 with a remainder of 358.
Record the quotient 6 as the next digit in the result. 
Result so far: 63907.6
Subtract 3852 from 4210 to get 358.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3580, and continue the process.

Step 10:
642 goes into 3580 5 times with a remainder of 370.
Write down 5 as next digit of the result. 
Result so far: 63907.65
If we take 3210 away from 3580, we end up with 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3700, and continue the process.

On to step 11:
3700 divided by 642 is 5 with a remainder of 490.
The number 5 becomes the next digit in our result. 
Result so far: 63907.655
The remainder is 490 after subtracting 3210 from 3700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4900, and continue the process.

The final result is 63907.655 with a remainder of 0.049.