please help me with part b and explain conceptully where you got the numbers from

Refer to the following mentioned data. Net revenues Cost of products sokd Gross marg n (In millions) 2014 2013 2012 $0.268 $8.052 S7.175 5.370 5,140 4.385 $2.898 $2,912 S2.810 Required: a. Calculate the gross profnt ratio for each of the past three years. (Round your answers to 1 decimal place.) 2014 2013 2012 35.11% I 36.23% 39.21% b. Assume that Campbell's net sales for the first four months of 2015 totaled $2.7 billion. Calculate an estimated cost of goods sold and gross profit for the four months, using the gross profit ratio for 2014. (Do not round intermediate calculations. Enter your answers in millions rounded to nearest whole number (i.e., 5,000,000 should be ntered as 5). Cost of goods sold Gross proit milion milion Refer to the following mentioned data. Net revenues Cost of products sokd Gross marg n (In millions) 2014 2013 2012 $0.268 $8.052 S7.175 5.370 5,140 4.385 $2.898 $2,912 S2.810 Required: a. Calculate the gross profnt ratio for each of the past three years. (Round your answers to 1 decimal place.) 2014 2013 2012 35.11% I 36.23% 39.21% b. Assume that Campbell's net sales for the first four months of 2015 totaled $2.7 billion. Calculate an estimated cost of goods sold and gross profit for the four months, using the gross profit ratio for 2014. (Do not round intermediate calculations. Enter your answers in millions rounded to nearest whole number (i.e., 5,000,000 should be ntered as 5). Cost of goods sold Gross proit milion milion