How is breaking apart the problem 16x34 like solving four simpler problems?

Estimate the product. round the first factor to the nearest whole number, round the second factor to the nearest ten, and then multiply. 3 8/9 × 96

Can someone me and explain..will award brainlest!

90.0% complete a b c d e confirm last week, your delivery runs took 7 hours 12 minutes on monday, 6 hours 46 minutes on wednesday, and 6 hours 53 minutes on friday. what was your average time for a delivery run?