We look at the division of 392889 by 3 
The aim is to understand the frequency of 3 in 392889.

Let's proceed to step 1:
3 goes into 3 1 times with a remainder of 0.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 3 away from 3, we end up with 0.
Fetch the next digit (9) from the dividend, attach it to 0 and continue: 9 / 3

Let's proceed to step 2:
3 goes into 9 3 times with a remainder of 0.
The next digit of our result is 3. 
Result so far: 13.0
Deduct 9 from 9 and we're left with 0.
Grab the next digit (2) from the dividend, add it to 0, then carry on: 2 / 3

Advancing to step 3:
When dividing 2 by 3, we get 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 130.0
If we subtract 0 from 2, we get 2.
Grab the next digit (8) from the dividend, add it to 2, then carry on: 28 / 3

Advancing to step 4:
3 goes into 28 9 times with a remainder of 1.
Record the quotient 9 as the next digit in the result. 
Result so far: 1309.0
If we take 27 away from 28, we end up with 1.
Append the next digit (8) from the dividend to 1 and continue with: 18 / 3

Let's proceed to step 5:
The number 3 fits into 18 6 times, leaving a remainder of 0.
The next digit of our result is 6. 
Result so far: 13096.0
If we take 18 away from 18, we end up with 0.
Fetch the next digit (9) from the dividend, attach it to 0 and continue: 9 / 3

Step 6:
When dividing 9 by 3, we get 3 with a remainder of 0.
Record the quotient 3 as the next digit in the result. 
Result so far: 130963.0
Deduct 9 from 9 and we're left 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.

Step 7:
The number 3 fits into 0 0 times, leaving a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 130963.0
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.

Moving on to step 8:
The number 3 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 130963.0
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.

The final outcome is 130963.0, with a leftover of 0.0.