02 Íàéäèòå çíà÷åíèå âûðàæåíèÿ  `*`(`/`(1, 3), `/`(21, 5)). 

ÐÅØÅÍÈÅ 

 

(1/3)*(21/5) 

http://www.wolframalpha.com/input/?i=%281%2F3%29*%2821%2F5%29 

ÎÒÂÅÒ 

1.4