12+27+42+57+33+38+43+48?

Question

12+27+42+57+33+38+43+48?

Answer 1

12+27=39
39+42=81
81+57=138
138+33=171
171+38=209
209+43=252
252+48=300

12+27+42+57+33+38+43+48=300