ok so i was wondering about photons having zero mass.

if e=mc^2 then c^2=e/m and e/c^2=m

if mass is zero you find yourself dividing by zero which is impossible

1/1 times the reciprocal of zero (lets say zero is 0/1) 1/1*1/0=1/0 as you can see its a paradox (as all of you already knew)

so how can zero mass have energy. well that's what i asked so i used a scientific calculator and e/c^2=m to try to calculate what the mass would be if e=mc^2 were true using the energy in joules(4*10^-19) of a photon and the speed of light (2.99792458*10^8) and got this

(i used the parentheses to make it less hard to see)

(4*10^-19)/(2.99792458*10^8)^2=0

ZERO

how could that be that would mean 0*c^2=4*10^-19

IMPOSSIBLE

i am no physicists i am just a freshman in high school but i don't see how this could be possible and know i must have made an error could someone please just show me where its driving me crazy.