Let's divide 50249451 by 3
The aim is to understand the frequency of 3 in 50249451.

On to step 1:
If we divide 5 by 3, we get 1 and a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 3 away from 5, we end up with 2.
Bring next digit (0) of the dividend behind the 2 and repeat the process: 20 / 3

Step 2:
20 divided by 3 is 6 with a remainder of 2.
Use 6 as the next digit of our solution. 
Result so far: 16.0
If we take 18 away from 20, we end up with 2.
Append the next digit (2) from the dividend to 2 and continue with: 22 / 3

Step 3:
3 goes into 22 7 times with a remainder of 1.
Use 7 as the next digit of our solution. 
Result so far: 167.0
Subtracting 21 from 22 leaves us with 1.
Take the next digit (4) from the dividend and append it to 1, then repeat: 14 / 3

Let's proceed to step 4:
If we divide 14 by 3, we get 4 and a remainder of 2.
Write down 4 as next digit of the result. 
Result so far: 1674.0
The remainder is 2 after subtracting 12 from 14.
Fetch the next digit (9) from the dividend, attach it to 2 and continue: 29 / 3

Advancing to step 5:
29 divided by 3 is 9 with a remainder of 2.
The number 9 becomes the next digit in our result. 
Result so far: 16749.0
The remainder is 2 after subtracting 27 from 29.
Include the next digit (4) from the dividend after 2, then repeat: 24 / 3

Step 6:
When dividing 24 by 3, we get 8 with a remainder of 0.
The number 8 becomes the next digit in our result. 
Result so far: 167498.0
The remainder is 0 after subtracting 24 from 24.
Fetch the next digit (5) from the dividend, attach it to 0 and continue: 5 / 3

Advancing to step 7:
5 divided by 3 is 1 with a remainder of 2.
Record the quotient 1 as the next digit in the result. 
Result so far: 1674981.0
Subtract 3 from 5 to get 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 3

Let's proceed to step 8:
3 can be fit into 21 7 times, resulting in a remainder of 0.
Record the quotient 7 as the next digit in the result. 
Result so far: 16749817.0
If we take 21 away from 21, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 9:
0 divided by 3 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 16749817.0
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 10:
3 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 16749817.0
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 16749817.0, and the remainder is 0.0.