The formula rho equals m over V, where ρ = density, m = mass, and V = volume, is used to calculate density. Solve this formula for m. m = ρV
m = ρ + V
m = ρ − V
m equals V over rho

i agree because i see the other persons thinking is clear

it's undefined because anything multiplied by 0 is 0. that said, 7 days is 168 hours

they aren't great and cause destruction, idk man