We divide 420502 by 85
The aim is to understand the frequency of 85 in 420502.

Step 1:
4 divided by 85 is 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 85

Step 2:
85 can be fit into 42 0 times, resulting in a remainder of 42.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 42, we end up with 42.
Grab the next digit (0) from the dividend, add it to 42, then carry on: 420 / 85

Going ahead to step 3:
85 can be fit into 420 4 times, resulting in a remainder of 80.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
If we take 340 away from 420, we end up with 80.
Fetch the next digit (5) from the dividend, attach it to 80 and continue: 805 / 85

On to step 4:
The number 85 fits into 805 9 times, leaving a remainder of 40.
Use 9 as the next digit of our solution. 
Result so far: 49.0
Subtracting 765 from 805 leaves us with 40.
Grab the next digit (0) from the dividend, add it to 40, then carry on: 400 / 85

Advancing to step 5:
400 divided by 85 is 4 with a remainder of 60.
Write down 4 as next digit of the result. 
Result so far: 494.0
If we take 340 away from 400, we end up with 60.
Grab the next digit (2) from the dividend, add it to 60, then carry on: 602 / 85

Moving on to step 6:
602 divided by 85 is 7 with a remainder of 7.
Put 7 as the next digit of the answer. 
Result so far: 4947.0
Deduct 595 from 602 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 7:
85 can be fit into 70 0 times, resulting in a remainder of 70.
Put 0 as the next digit of the answer. 
Result so far: 4947.0
If we subtract 0 from 70, 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.

Moving on to step 8:
The number 85 fits into 700 8 times, leaving a remainder of 20.
Use 8 as the next digit of our solution. 
Result so far: 4947.08
Subtracting 680 from 700 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.

Going ahead to step 9:
200 divided by 85 is 2 with a remainder of 30.
Write down 2 as next digit of the result. 
Result so far: 4947.082
If we take 170 away from 200, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 10:
When dividing 300 by 85, we get 3 with a remainder of 45.
Put 3 as the next digit of the answer. 
Result so far: 4947.0823
Subtracting 255 from 300 leaves us with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Step 11:
85 can be fit into 450 5 times, resulting in a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 4947.08235
If we take 425 away from 450, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Advancing to step 12:
The number 85 fits into 250 2 times, leaving a remainder of 80.
Record the quotient 2 as the next digit in the result. 
Result so far: 4947.082352
If we subtract 170 from 250, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Going ahead to step 13:
If we divide 800 by 85, we get 9 and a remainder of 35.
Write down 9 as next digit of the result. 
Result so far: 4947.0823529
The remainder is 35 after subtracting 765 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Step 14:
When dividing 350 by 85, we get 4 with a remainder of 10.
Put 4 as the next digit of the answer. 
Result so far: 4947.08235294
Subtract 340 from 350 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final outcome is 4947.08235294, with a leftover of 1e-08.