B | + | C | + | D | = Solution: 5072895337539755822087777506072339445587895905719156736*5072895337539755822087777506072339445587895905719156736 = 25734267105632593155266712577973372440302080755933121319180325362544275565838974676261850665812318570934173696 Column vertical calculation:
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