there were 39, 520 breast cancer deaths in the U.S. in 2011, or ___ of the 2007 breast cancer deaths in the U.S.

Question

there were 39, 520 breast cancer deaths in the U.S. in 2011, or ___ of the 2007 breast cancer deaths in the U.S. 
what is the equation to determine the number of breast cancer deaths in 2007 in the U.S.

Ms. Sue · Answer

What is supposed to be in the ____?