We look at the division of 39600220 by 502 
The aim is to understand the frequency of 502 in 39600220.

Step 1:
3 divided by 502 is 0 with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 3 to get 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 502

Going ahead to step 2:
39 divided by 502 is 0 with a remainder of 39.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 39 to get 39.
Fetch the next digit (6) from the dividend, attach it to 39 and continue: 396 / 502

On to step 3:
If we divide 396 by 502, we get 0 and a remainder of 396.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 396 after subtracting 0 from 396.
Bring next digit (0) of the dividend behind the 396 and repeat the process: 3960 / 502

Moving on to step 4:
502 goes into 3960 7 times with a remainder of 446.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
If we take 3514 away from 3960, we end up with 446.
Fetch the next digit (0) from the dividend, attach it to 446 and continue: 4460 / 502

Moving on to step 5:
When dividing 4460 by 502, we get 8 with a remainder of 444.
Write down 8 as next digit of the result. 
Result so far: 78.0
Subtract 4016 from 4460 to get 444.
Grab the next digit (2) from the dividend, add it to 444, then carry on: 4442 / 502

Moving on to step 6:
502 goes into 4442 8 times with a remainder of 426.
The number 8 becomes the next digit in our result. 
Result so far: 788.0
Deduct 4016 from 4442 and we're left with 426.
Take the next digit (2) from the dividend and append it to 426, then repeat: 4262 / 502

Advancing to step 7:
If we divide 4262 by 502, we get 8 and a remainder of 246.
Put 8 as the next digit of the answer. 
Result so far: 7888.0
Subtracting 4016 from 4262 leaves us with 246.
Take the next digit (0) from the dividend and append it to 246, then repeat: 2460 / 502

Step 8:
502 can be fit into 2460 4 times, resulting in a remainder of 452.
The next digit of our result is 4. 
Result so far: 78884.0
Subtract 2008 from 2460 to get 452.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4520, and continue the process.

Moving on to step 9:
502 can be fit into 4520 9 times, resulting in a remainder of 2.
Record the quotient 9 as the next digit in the result. 
Result so far: 78884.9
Deduct 4518 from 4520 and we're left with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 10:
When dividing 20 by 502, we get 0 with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 78884.9
Subtracting 0 from 20 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 11:
When dividing 200 by 502, we get 0 with a remainder of 200.
Put 0 as the next digit of the answer. 
Result so far: 78884.9
If we take 0 away from 200, we end up with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

The final result is 78884.9 with a remainder of 0.02.