Regarding Coinlend.org and how to profit

[Coinac]

Hi there,

My question is quite simple.

Coinlend's accounts are priced with three different prices: 1$/month for Basic, 2$ for Standard and 3$ for a Premium.

Now, how much Bitcoin do I need to lend out at what interest-rate in order to justify the cost of a either a Standard or a Premium account?
How does a mathematically numb guy (like f.ex a friend of mine) calculate that in a fairly simple way  

Thanking YOU for your future fantastic reply, have a nice day!

Coinac

[TryNinja]

Depends on what coin you are going to lend and at which exchange. I saw in their websit that they have a few coins paying 8%/year on Nexo. If you pay $3 per week for the Premium, just calculate how much you need to earn more than that. Disregarding the compound interest, something like $2000 * 0.66% (8% / 12 months), would give you $3.3 per week or $13.2 per month. But then they also charge +5% on interest earned, so put that in the math.