The mass of an object that weights 7 N on earth would be 0.7142857...
Weight = Mass x acceleration of gravity ( = 9.8)
7/ 9.8 = 0.7142857...
If an object weights 450 N, then it weights 45.91 pounds.
Weight = mass x acceleration of gravity (= 9.8)
450/ 9.8 = 45.918367...