What is Lifetime Value to Customer Acquisition Cost ratio of EarlyTech Company given the following estimates?

Customers are expected to pay for an annual subscription of $$300$ at the beginning of the year for a maximum of $3$ years

Each year, $30\%$ of the remaining customers will not renew their subscription

To determine lifetime value, use a discount rate of $15\%$

The company attains customers through Google Ads for which it pays $$0\mathrm{.}25$ a click

It takes about $1000$ clicks to get $3$ customers

Express your answer to two decimal places.

the correct answer is $7\mathrm{.}13$ pls walk me through how