43度37分除以3等于几?90度减27度18分25秒等于几?25度20分加44度56分等于几?20度20分乘4等于几?

43°37'÷3
=42°97'÷3
=42°96'60''÷3
=14°32'20''
90°-27°18'25''
=89°60'-27°18'25''
=89°59'60''-27°18'25''
=62°41'35''
25°20'+44°56'
=69°76'
=69°(60'+16')
=10°16'
20°20'×4
=80°80'
=80°(60'+20')
=81°20