(B)0[marith-expr = qwq> numeric-value qwqqwqq> + qqwqqwq> numeric-value qwqqq> tq> numeric-host-var qu tqq> - qqu tq> numeric-host-var qu mq> numeric-db-field qj tqq> * qqu mq> numeric-db-field qj mqq> / qqj