let\'s translate to decimal like this:
the Sign bit is not included in the translation!
7∙163+15∙162+15∙161+15∙160 = 7∙4096+15∙256+15∙16+15∙1 = 28672+3840+240+15 = 3276710
Since the number is signed and has a signed bit, the result will have a negative sign
got It: FFFF16 =-3276710