In a titration process it takes 22.00 mL of nitric acid to neutralize 16.70 mL of 0.200 M calcium hydroxide solution. what is the balanced equation and what is the molarity of the acid. please explain

2HNO3 + Ca(OH)2 ==> Ca(NO3)2 + 2H2O

mols Ca(OH)2 = M x L = ?
mols HNO3 = twice that (look at the coefficients).
M HNO3 = mols HNO3/L HNO3.