I have a question on solubility regarding amphoteric hydroxides: how many moles of NaOH must be added to 1L of H2O to dissolve .1 mol of Zn(OH)2?

I have a question on solubility regarding amphoteric hydroxides:

how many moles of NaOH must be added to 1L of H2O to dissolve .1 mol of Zn(OH)2?

I figured we had to use the Kf because its a complex ion instead of ksp, but im not 100% sure on how to find the NaOH required