Table schema:
CREATE TABLE table_11647327_2 (marginal_ordinary_income_tax_rate VARCHAR, married_filing_jointly_or_qualified_widow_er_ VARCHAR)

Question: What is the amoun of marginal ordinary income tax rate where married filing jointly or qualified widow is $208,851–$372,950?
SQL: SELECT COUNT(marginal_ordinary_income_tax_rate) FROM table_11647327_2 WHERE married_filing_jointly_or_qualified_widow_er_ = "$208,851–$372,950"