how is cellular respiration is involved in the breakdown and synthesis of other organic molecules such as fats and proteins.

The sun produces 3.9 ⋅ 10^33 ergs of radiant energy per second.
How many ergs the sun produce in 3.25 ⋅ 10^3 seconds

3.9 ⋅ 10^33 x 3.25 ⋅ 10^3
= (3.9 x 3.25)(10^33 x 10^3)
= 12.675 x 10^36
= 1.2675 x 10^37

answer
1.2675 x 10^37 ergs of radiant energy the sun produce in 3.25 ⋅ 10^3 seconds