I just started. Can you help me? I have 500 USDT and I want to trade futures at x20, but I want the liquidation price to be at 102 BTC. How much margin do I need? What is the calculation formula? Can anyone explain it to me?

$BTC working hours for the old man to reach 100k is quite difficult at most that will be the final sweep before the old man drops because I see that whales and the big guys have been continuously taking profits while the price increase is mainly due to the fomo push