We look at the division of 45396820 by 285 
The aim is to understand the frequency of 285 in 45396820.

Going ahead to step 1:
The number 285 fits into 4 0 times, leaving a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Append the next digit (5) from the dividend to 4 and continue with: 45 / 285

Advancing to step 2:
285 goes into 45 0 times with a remainder of 45.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 45 leaves us with 45.
Bring next digit (3) of the dividend behind the 45 and repeat the process: 453 / 285

Step 3:
453 divided by 285 is 1 with a remainder of 168.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 285 away from 453, we end up with 168.
Grab the next digit (9) from the dividend, add it to 168, then carry on: 1689 / 285

Moving on to step 4:
285 can be fit into 1689 5 times, resulting in a remainder of 264.
The next digit of our result is 5. 
Result so far: 15.0
If we take 1425 away from 1689, we end up with 264.
Bring next digit (6) of the dividend behind the 264 and repeat the process: 2646 / 285

Let's proceed to step 5:
When dividing 2646 by 285, we get 9 with a remainder of 81.
The next digit of our result is 9. 
Result so far: 159.0
Subtract 2565 from 2646 to get 81.
Append the next digit (8) from the dividend to 81 and continue with: 818 / 285

On to step 6:
The number 285 fits into 818 2 times, leaving a remainder of 248.
Use 2 as the next digit of our solution. 
Result so far: 1592.0
The remainder is 248 after subtracting 570 from 818.
Append the next digit (2) from the dividend to 248 and continue with: 2482 / 285

Step 7:
If we divide 2482 by 285, we get 8 and a remainder of 202.
The next digit of our result is 8. 
Result so far: 15928.0
The remainder is 202 after subtracting 2280 from 2482.
Fetch the next digit (0) from the dividend, attach it to 202 and continue: 2020 / 285

Advancing to step 8:
When dividing 2020 by 285, we get 7 with a remainder of 25.
Use 7 as the next digit of our solution. 
Result so far: 159287.0
If we subtract 1995 from 2020, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 9:
250 divided by 285 is 0 with a remainder of 250.
Put 0 as the next digit of the answer. 
Result so far: 159287.0
Deduct 0 from 250 and we're left with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Moving on to step 10:
If we divide 2500 by 285, we get 8 and a remainder of 220.
Write down 8 as next digit of the result. 
Result so far: 159287.08
If we subtract 2280 from 2500, we get 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Step 11:
2200 divided by 285 is 7 with a remainder of 205.
The next digit of our result is 7. 
Result so far: 159287.087
Subtract 1995 from 2200 to get 205.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2050, and continue the process.

Let's proceed to step 12:
The number 285 fits into 2050 7 times, leaving a remainder of 55.
Put 7 as the next digit of the answer. 
Result so far: 159287.0877
If we take 1995 away from 2050, we end up with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

The final outcome is 159287.0877, with a leftover of 0.00055.