47°40′37″×2+34°45′
=47°×2+40′×2+37″×2+34°45′
=94°+80′+74″+34°45′
=94°+1°20′+1′14″+34°45′
=95°21′14″+34°45′
=129°66′14″
=130°6′14″
47°40′37″×2+34°45′
=47°×2+40′×2+37″×2+34°45′
=94°+80′+74″+34°45′
=94°+1°20′+1′14″+34°45′
=95°21′14″+34°45′
=129°66′14″
=130°6′14″