We look at the division of 154354 by 3 
We want to figure out the number of times 154354 can be divided by 3.

On to step 1:
When dividing 1 by 3, we get 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 3

Moving on to step 2:
The number 3 fits into 15 5 times, leaving a remainder of 0.
The next digit of our result is 5. 
Result so far: 5.0
Subtracting 15 from 15 leaves us with 0.
Append the next digit (4) from the dividend to 0 and continue with: 4 / 3

Going ahead to step 3:
4 divided by 3 is 1 with a remainder of 1.
Use 1 as the next digit of our solution. 
Result so far: 51.0
Subtracting 3 from 4 leaves us with 1.
Take the next digit (3) from the dividend and append it to 1, then repeat: 13 / 3

Step 4:
If we divide 13 by 3, we get 4 and a remainder of 1.
Record the quotient 4 as the next digit in the result. 
Result so far: 514.0
If we subtract 12 from 13, we get 1.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 3

Going ahead to step 5:
When dividing 15 by 3, we get 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 5145.0
Subtract 15 from 15 to get 0.
Fetch the next digit (4) from the dividend, attach it to 0 and continue: 4 / 3

Advancing to step 6:
The number 3 fits into 4 1 times, leaving a remainder of 1.
The next digit of our result is 1. 
Result so far: 51451.0
Subtracting 3 from 4 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.

Moving on to step 7:
When dividing 10 by 3, we get 3 with a remainder of 1.
The number 3 becomes the next digit in our result. 
Result so far: 51451.3
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.

On to step 8:
When dividing 10 by 3, we get 3 with a remainder of 1.
The number 3 becomes the next digit in our result. 
Result so far: 51451.33
Deduct 9 from 10 and we're left 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.

The final result is 51451.33 with a remainder of 0.001.