176 ÷16 =11(days) How many days does it take to find a * * *?
1 1-6=5 (days) The rest will take five days to read.
(2)30×70=2 100 (kg) to find a * * * how much kg.
2 100÷5=420 (pieces) Find out how many baskets you want.
(3)8+ 12=20 (days). It takes 20 days for two people to have a * * *.
20× 2/5 =8 (days) takes 8 days to complete.
(4)800÷ 100=8 (hours) to calculate how many hours.
800÷80= 10 (hours) Calculate the return time.
10+8= 18 (hours) Calculate how many hours it takes to return a * * *.
Remarks: Sorry, I didn't see the last sentence, so I wrote the answer.