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OK. So do you have any knowledge of how to get money from bank account to coinbase?

You can look for exchanger of your local currency to bitcoin, in your country, then use blocktrades.us to change the bitcoin to steem or SBD.

You mean it is possible to offer about 1.5 steem and at the end of 7 days i get up to 26 SP? If this is true please how can you help. I really need to build my SP. Thanks

I'm talking about leasing(like borrowing) and up there it's 7 weeks not days. You can also lease for 7 days, just find the best offer for your budget there.
The SP will go back to the owner at the expiration date stated on the offer.