An adult presented with hemetemesis and upper abdominal pain. Endoscopy revealed a growth at the pyloric antrum of the stomach. CT scan showed growth involving the pyloric antrum without infiltration or invasion into surrounding structures and no evidence of distant metastasis. At Laparotomy neoplastic growth was observed to involve the posterior wall of stomach and the pancreas extending 6cm up to tail of pancreas. What will be the most appropriate surgical management: