 
 <translate> Give the step-by-step reasoning process and then the final answer. Nate is reading a 400-page book. He finished reading 20% of the book. How many pages does he need to read to finish the book? <hau> Bayyana tsarin tunani mataki-mataki sannan kuma amsar karshe. Nate yana karanta littafi mai shafi 400. Ya gama karanta kashi 20% na littafin. Shafuka nawa ne yake bukatar ya karanta don ya gama littafin? 