(20)EasymmmmmmmmmmmathematicsQQQQ(20)(20)(20)(20

Q1:
How to use +,-,╳,and anorther maths ? to make these N.(1997,6,27,6,12,)'s answer be 22?
Show your work.
Q2:
How to use +,-,╳,and anorther maths ? to make these N.(1997,6,27,6,11)'s answer be 139?
Show your work.
Q3:
How to use +,-,╳,and anorther maths ? to make these N.(1997,6,27,5,1)'s answer be 17?
Show your work.
Do only one Q can also get (20) point.
You can do three Q if you like.