Вычислите устно:
а) $\snippet{name: op_column_rows, args: ['27 + 33', '* 5', ' + 180', ': 80', '* 15'], solution: '?'}$;
б) $\snippet{name: op_column_rows, args: ['15 * 10', '+ 50', ': 40', '* 70', ': 50'], solution: '?'}$;
в) $\snippet{name: op_column_rows, args: ['17 + 28', '* 2', '- 15', ': 25', '* 90'], solution: '?'}$;
г) $\snippet{name: op_column_rows, args: ['10 * 18', '+ 70', ': 5', '* 8', ': 25'], solution: '?'}$;
д) $\snippet{name: op_column_rows, args: ['40 * 4', '+ 520', '- 200', ': 60', '* 125'], solution: '?'}$.