We divide 487751 by 3
The aim is to understand the frequency of 3 in 487751.

Advancing to step 1:
3 can be fit into 4 1 times, resulting in a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 3 away from 4, we end up with 1.
Bring next digit (8) of the dividend behind the 1 and repeat the process: 18 / 3

Step 2:
18 divided by 3 is 6 with a remainder of 0.
The next digit of our result is 6. 
Result so far: 16.0
If we take 18 away from 18, we end up with 0.
Append the next digit (7) from the dividend to 0 and continue with: 7 / 3

On to step 3:
If we divide 7 by 3, we get 2 and a remainder of 1.
The number 2 becomes the next digit in our result. 
Result so far: 162.0
Deduct 6 from 7 and we're left with 1.
Take the next digit (7) from the dividend and append it to 1, then repeat: 17 / 3

Advancing to step 4:
If we divide 17 by 3, we get 5 and a remainder of 2.
The number 5 becomes the next digit in our result. 
Result so far: 1625.0
If we take 15 away from 17, we end up with 2.
Bring next digit (5) of the dividend behind the 2 and repeat the process: 25 / 3

Step 5:
3 goes into 25 8 times with a remainder of 1.
Put 8 as the next digit of the answer. 
Result so far: 16258.0
If we take 24 away from 25, we end up with 1.
Grab the next digit (1) from the dividend, add it to 1, then carry on: 11 / 3

Step 6:
The number 3 fits into 11 3 times, leaving a remainder of 2.
Put 3 as the next digit of the answer. 
Result so far: 162583.0
Deduct 9 from 11 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.

Step 7:
When dividing 20 by 3, we get 6 with a remainder of 2.
The next digit of our result is 6. 
Result so far: 162583.6
Subtract 18 from 20 to 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.

Let's proceed to step 8:
If we divide 20 by 3, we get 6 and a remainder of 2.
Use 6 as the next digit of our solution. 
Result so far: 162583.66
The remainder is 2 after subtracting 18 from 20.
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 162583.66, and the remainder is 0.002.