We're dividing 812510 by 3 
The aim is to understand the frequency of 3 in 812510.

Moving on to step 1:
8 divided by 3 is 2 with a remainder of 2.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we take 6 away from 8, we end up with 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 3

Step 2:
21 divided by 3 is 7 with a remainder of 0.
Write down 7 as next digit of the result. 
Result so far: 27.0
If we subtract 21 from 21, we get 0.
Grab the next digit (2) from the dividend, add it to 0, then carry on: 2 / 3

Going ahead to step 3:
3 goes into 2 0 times with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 270.0
Subtract 0 from 2 to get 2.
Grab the next digit (5) from the dividend, add it to 2, then carry on: 25 / 3

On to step 4:
25 divided by 3 is 8 with a remainder of 1.
Use 8 as the next digit of our solution. 
Result so far: 2708.0
Subtracting 24 from 25 leaves us with 1.
Grab the next digit (1) from the dividend, add it to 1, then carry on: 11 / 3

Advancing to step 5:
If we divide 11 by 3, we get 3 and a remainder of 2.
Use 3 as the next digit of our solution. 
Result so far: 27083.0
Deduct 9 from 11 and we're left with 2.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 3

Let's proceed to step 6:
3 can be fit into 20 6 times, resulting in a remainder of 2.
The next digit of our result is 6. 
Result so far: 270836.0
If we subtract 18 from 20, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Step 7:
3 goes into 20 6 times with a remainder of 2.
Use 6 as the next digit of our solution. 
Result so far: 270836.6
Subtracting 18 from 20 leaves us 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.

Going ahead to step 8:
20 divided by 3 is 6 with a remainder of 2.
Write down 6 as next digit of the result. 
Result so far: 270836.66
Deduct 18 from 20 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.

The quotient of the division is 270836.66, and the remainder is 0.002.