The physics
The order of magnitude of a number is its nearest power of ten. 600 N is about 10³ N. 3.6×10²² N is about 10²² or 10²³ N.
F_grav = G m₁m₂/r² F_elec = k q₁q₂/r²
At nuclear distances, take gravity as 1. Then the weak force is about 10²⁵. The electromagnetic force is about 10³⁶. The strong force is about 10³⁸.
In a correct equation, both sides have the same powers of M, L and T.