What is the energy (in J) of a photon of ultra-violet light that has a wavelength of 252 nm? The units for the answer are Joules. The error interval is 5%.

Question

I did the problem and i got 7.893E-37
did i do correct or was i close

Answer 1

The number is right. The exponent is not.
E = 6.626E-34*3E8/252E-9 = ??