78447751 ÷ 3 
The aim is to understand the frequency of 3 in 78447751.

On to step 1:
3 can be fit into 7 2 times, resulting in a remainder of 1.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 1 after subtracting 6 from 7.
Include the next digit (8) from the dividend after 1, then repeat: 18 / 3

Going ahead to step 2:
If we divide 18 by 3, we get 6 and a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 26.0
Subtracting 18 from 18 leaves us with 0.
Grab the next digit (4) from the dividend, add it to 0, then carry on: 4 / 3

Advancing to step 3:
If we divide 4 by 3, we get 1 and a remainder of 1.
The next digit of our result is 1. 
Result so far: 261.0
Subtract 3 from 4 to get 1.
Take the next digit (4) from the dividend and append it to 1, then repeat: 14 / 3

Going ahead to step 4:
14 divided by 3 is 4 with a remainder of 2.
Record the quotient 4 as the next digit in the result. 
Result so far: 2614.0
Deduct 12 from 14 and we're left with 2.
Bring next digit (7) of the dividend behind the 2 and repeat the process: 27 / 3

Step 5:
If we divide 27 by 3, we get 9 and a remainder of 0.
Record the quotient 9 as the next digit in the result. 
Result so far: 26149.0
If we take 27 away from 27, we end up with 0.
Include the next digit (7) from the dividend after 0, then repeat: 7 / 3

Going ahead to step 6:
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: 261492.0
If we subtract 6 from 7, we get 1.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 3

Going ahead to step 7:
The number 3 fits into 15 5 times, leaving a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 2614925.0
Subtract 15 from 15 to get 0.
Include the next digit (1) from the dividend after 0, then repeat: 1 / 3

Let's proceed to step 8:
The number 3 fits into 1 0 times, leaving a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 26149250.0
Subtracting 0 from 1 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.

Going ahead to step 9:
3 goes into 10 3 times with a remainder of 1.
The next digit of our result is 3. 
Result so far: 26149250.3
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.

Advancing to step 10:
3 goes into 10 3 times with a remainder of 1.
The number 3 becomes the next digit in our result. 
Result so far: 26149250.33
The remainder is 1 after subtracting 9 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

The final result is 26149250.33 with a remainder of 0.001.