https://www.ers.usda.gov/webdocs/DataFiles/48685/milkcowsandprod.xlsx?v=1413.4

https://catalog.data.gov/dataset/livestock-meat-domestic-data/resource/257788c4-e153-4712-abf3-f2f339bbefec

thousands_of_head_of_cows = 9448.0
actual_cows = 1000 * thousands_of_head_of_cows
annual_male_calves = .5 * actual_cows
veal_weight_of_calves_in_pounds = 260
annual_veal_production_in_millions_of_pounds = 58
annual_percentage_of_bobby_calves_that_become_veal = ((annual_veal_production_in_millions_of_pounds * 1000000) /  (veal_weight_of_calves_in_pounds * annual_male_calves))*100
print(annual_percentage_of_bobby_calves_that_become_veal)

4.722204129486094