Let's divide 761429 by 3
The aim is to understand the frequency of 3 in 761429.

Step 1:
3 can be fit into 7 2 times, resulting in a remainder of 1.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 6 from 7, we get 1.
Append the next digit (6) from the dividend to 1 and continue with: 16 / 3

On to step 2:
16 divided by 3 is 5 with a remainder of 1.
Record the quotient 5 as the next digit in the result. 
Result so far: 25.0
Deduct 15 from 16 and we're left with 1.
Take the next digit (1) from the dividend and append it to 1, then repeat: 11 / 3

Moving on to step 3:
3 can be fit into 11 3 times, resulting in a remainder of 2.
The number 3 becomes the next digit in our result. 
Result so far: 253.0
If we subtract 9 from 11, we get 2.
Append the next digit (4) from the dividend to 2 and continue with: 24 / 3

Let's proceed to step 4:
When dividing 24 by 3, we get 8 with a remainder of 0.
Put 8 as the next digit of the answer. 
Result so far: 2538.0
If we subtract 24 from 24, we get 0.
Append the next digit (2) from the dividend to 0 and continue with: 2 / 3

Let's proceed to step 5:
3 can be fit into 2 0 times, resulting in a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 25380.0
Subtracting 0 from 2 leaves us with 2.
Fetch the next digit (9) from the dividend, attach it to 2 and continue: 29 / 3

On to step 6:
When dividing 29 by 3, we get 9 with a remainder of 2.
Record the quotient 9 as the next digit in the result. 
Result so far: 253809.0
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.

Advancing to step 7:
The number 3 fits into 20 6 times, leaving a remainder of 2.
Record the quotient 6 as the next digit in the result. 
Result so far: 253809.6
Subtracting 18 from 20 leaves us 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.

Advancing to step 8:
20 divided by 3 is 6 with a remainder of 2.
The number 6 becomes the next digit in our result. 
Result so far: 253809.66
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 quotient of the division is 253809.66, and the remainder is 0.002.