In a survey, it was found that 65% of adults operate the flusher of toilets in public restrooms with their foot. (a) If 700 adults are randomly selected, how many would we expect to flush toilets in public restrooms with their foot? (b) Would it be unusual to observe 560 adults who flush toilets in public restrooms with their foot? (a) We would expect adults to flush toilets in public restrooms with their foot. (Type a whole number.)