We divide 965189 by 3
The aim is to understand the frequency of 3 in 965189.

Let's proceed to step 1:
3 can be fit into 9 3 times, resulting in a remainder of 0.
Use 3 as the next digit of our solution. 
Result so far: 3.0
The remainder is 0 after subtracting 9 from 9.
Include the next digit (6) from the dividend after 0, then repeat: 6 / 3

Let's proceed to step 2:
When dividing 6 by 3, we get 2 with a remainder of 0.
Use 2 as the next digit of our solution. 
Result so far: 32.0
If we take 6 away from 6, we end up with 0.
Append the next digit (5) from the dividend to 0 and continue with: 5 / 3

Advancing to step 3:
3 can be fit into 5 1 times, resulting in a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 321.0
Subtracting 3 from 5 leaves us with 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 3

Let's proceed to step 4:
The number 3 fits into 21 7 times, leaving a remainder of 0.
Record the quotient 7 as the next digit in the result. 
Result so far: 3217.0
Subtract 21 from 21 to get 0.
Grab the next digit (8) from the dividend, add it to 0, then carry on: 8 / 3

Advancing to step 5:
The number 3 fits into 8 2 times, leaving a remainder of 2.
Put 2 as the next digit of the answer. 
Result so far: 32172.0
Deduct 6 from 8 and we're left with 2.
Take the next digit (9) from the dividend and append it to 2, then repeat: 29 / 3

Step 6:
3 goes into 29 9 times with a remainder of 2.
The number 9 becomes the next digit in our result. 
Result so far: 321729.0
The remainder is 2 after subtracting 27 from 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 7:
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: 321729.6
If we take 18 away from 20, we end up 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.

Going ahead to step 8:
3 can be fit into 20 6 times, resulting in a remainder of 2.
Put 6 as the next digit of the answer. 
Result so far: 321729.66
If we take 18 away from 20, we end up 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.

The final outcome is 321729.66, with a leftover of 0.002.