Let's divide 28198689 by 402
The aim is to understand the frequency of 402 in 28198689.

On to step 1:
2 divided by 402 is 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Bring next digit (8) of the dividend behind the 2 and repeat the process: 28 / 402

On to step 2:
402 can be fit into 28 0 times, resulting in a remainder of 28.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 28 and we're left with 28.
Include the next digit (1) from the dividend after 28, then repeat: 281 / 402

Advancing to step 3:
402 can be fit into 281 0 times, resulting in a remainder of 281.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 281, we get 281.
Take the next digit (9) from the dividend and append it to 281, then repeat: 2819 / 402

Going ahead to step 4:
When dividing 2819 by 402, we get 7 with a remainder of 5.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Deduct 2814 from 2819 and we're left with 5.
Grab the next digit (8) from the dividend, add it to 5, then carry on: 58 / 402

Going ahead to step 5:
The number 402 fits into 58 0 times, leaving a remainder of 58.
Record the quotient 0 as the next digit in the result. 
Result so far: 70.0
Subtracting 0 from 58 leaves us with 58.
Fetch the next digit (6) from the dividend, attach it to 58 and continue: 586 / 402

Advancing to step 6:
586 divided by 402 is 1 with a remainder of 184.
Record the quotient 1 as the next digit in the result. 
Result so far: 701.0
Subtract 402 from 586 to get 184.
Include the next digit (8) from the dividend after 184, then repeat: 1848 / 402

Step 7:
If we divide 1848 by 402, we get 4 and a remainder of 240.
Write down 4 as next digit of the result. 
Result so far: 7014.0
If we subtract 1608 from 1848, we get 240.
Bring next digit (9) of the dividend behind the 240 and repeat the process: 2409 / 402

Let's proceed to step 8:
The number 402 fits into 2409 5 times, leaving a remainder of 399.
Record the quotient 5 as the next digit in the result. 
Result so far: 70145.0
Subtract 2010 from 2409 to get 399.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3990, and continue the process.

Moving on to step 9:
When dividing 3990 by 402, we get 9 with a remainder of 372.
The number 9 becomes the next digit in our result. 
Result so far: 70145.9
If we subtract 3618 from 3990, we get 372.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3720, and continue the process.

Advancing to step 10:
402 goes into 3720 9 times with a remainder of 102.
Record the quotient 9 as the next digit in the result. 
Result so far: 70145.99
Deduct 3618 from 3720 and we're left with 102.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

The quotient of the division is 70145.99, and the remainder is 0.102.