在下面的（）中填上“>”、“<”或“=”。*E:x+H3j,H6c5s
639×0.9*n'|4z'i8T;S639*E:x+H3j,H6c5s
3.6÷1;K*g4f9b.n6G8w1G)d;a;Y3.6*E:x+H3j,H6c5s
360÷1.37g,S1t*\(m5y6@8a4x2x360*E:x+H3j,H6c5s
8.1÷0.16Z8w,i(e5B/n8.1*E:x+H3j,H6c5s