将下列算式填在合适的()里。*R3Q8R+L+S6B3`,o6x)f+c(L2O+@;`+r7x1H-I'x
36÷6 4×4 81÷9 72÷9 5×5*R3Q8R+L+S6B3`,o6x)f+c(L2O+@;`+r7x1H-I'x
9w3y)N1g<4P*O7K7~;P,O6`*L4i6|6S8i.l<'u-b+Y8|2z5R7V5n/d8G3f*j5L3M+F9b:S<5U5p9N4n1H5U/{5Z(y8`4g0k7P(p3Y*Y<)r7K(I0Y)\([,W(U1_*R3Q8R+L+S6B3`,o6x)f+c(L2O+@;`+r7x1H-I'x