we have been asked to find the sum of the series

As we know that a geometric series has a constant ratio "r" and it is defined as

The first term of the series is 
Geometric series sum formula is

Plugin the values we get

On simplification we get

Hence the sum of the given series is
Basically when you divide a decimal number with a number you then find out where the decimal of that number goes
Answer:
$0.4933
Step-by-step explanation:
i guess
Just divided by 3 ;)