Three clues please - answers should all be to do with finance
* totally exhausted but it gives you the return you want (3/2) ???/i? (could be all in)
* toy centotaph when mixed with the periodic table's main element and me provides a way to get more out of it (13 - only letter is at seconf which is a y) (think its something like hypothecate but cannot find a thirteen letter word - not sure what periodic table letter is - assume me becomes I)
* big boat that helped get us over a rough patch twice over (4 ??i?) - (could be ship but no idea what that has to do with finance)