16 + 27 + 61 + 62 + 51 + 68 + 69 = (simple method)

16 + 27 + 61 + 62 + 51 + 68 + 69 = (simple method)

16+27+61+62+51+68+69
=(62+68)+(61+69)+16+27+51
=130+130+67+27
=197+157
=200-3+154+3
=354