72820162 ÷ 3 
The aim is to understand the frequency of 3 in 72820162.

Step 1:
The number 3 fits into 7 2 times, leaving a remainder of 1.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we take 6 away from 7, we end up with 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 3

Advancing to step 2:
3 goes into 12 4 times with a remainder of 0.
Write down 4 as next digit of the result. 
Result so far: 24.0
Deduct 12 from 12 and we're left with 0.
Grab the next digit (8) from the dividend, add it to 0, then carry on: 8 / 3

Going ahead to step 3:
When dividing 8 by 3, we get 2 with a remainder of 2.
Record the quotient 2 as the next digit in the result. 
Result so far: 242.0
If we take 6 away from 8, we end up with 2.
Grab the next digit (2) from the dividend, add it to 2, then carry on: 22 / 3

Going ahead to step 4:
When dividing 22 by 3, we get 7 with a remainder of 1.
Record the quotient 7 as the next digit in the result. 
Result so far: 2427.0
Subtracting 21 from 22 leaves us with 1.
Take the next digit (0) from the dividend and append it to 1, then repeat: 10 / 3

On to step 5:
3 can be fit into 10 3 times, resulting in a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 24273.0
Subtracting 9 from 10 leaves us with 1.
Append the next digit (1) from the dividend to 1 and continue with: 11 / 3

Moving on to step 6:
3 goes into 11 3 times with a remainder of 2.
The number 3 becomes the next digit in our result. 
Result so far: 242733.0
The remainder is 2 after subtracting 9 from 11.
Include the next digit (6) from the dividend after 2, then repeat: 26 / 3

Moving on to step 7:
When dividing 26 by 3, we get 8 with a remainder of 2.
Use 8 as the next digit of our solution. 
Result so far: 2427338.0
If we subtract 24 from 26, we get 2.
Bring next digit (2) of the dividend behind the 2 and repeat the process: 22 / 3

Step 8:
The number 3 fits into 22 7 times, leaving a remainder of 1.
The number 7 becomes the next digit in our result. 
Result so far: 24273387.0
Deduct 21 from 22 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 9:
The number 3 fits into 10 3 times, leaving a remainder of 1.
The number 3 becomes the next digit in our result. 
Result so far: 24273387.3
If we subtract 9 from 10, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 10:
If we divide 10 by 3, we get 3 and a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 24273387.33
Subtracting 9 from 10 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

In conclusion, the division gives 24273387.33 with a balance of 0.001.