raise 3 to the 4th power, subtract w from the result, then divide v by what you have

raise 3 to the 4th power, subtract w from the result, then divide v by what you have

Raise 3 to the 4th power:
3^4

Simplified, this is
81

Subtract w from the result. We subtract w from 81:
81 - w

Then divide v by what you have. We divide v by (81 -w)
v/(81 - w)